fix: update default RPC timeouts/retry backoff (#86)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
{synth_log}
```
</details>

google-cloud-monitoring/src/main/java/com/google/cloud/monitoring/v3/stub/MetricServiceStubSettings.java

@@ -521,9 +521,9 @@ public static class Builder extends StubSettings.Builder<MetricServiceStubSettin
               .setInitialRetryDelay(Duration.ofMillis(100L))
               .setRetryDelayMultiplier(1.3)
               .setMaxRetryDelay(Duration.ofMillis(60000L))
-              .setInitialRpcTimeout(Duration.ofMillis(20000L))
-              .setRpcTimeoutMultiplier(1.0)
-              .setMaxRpcTimeout(Duration.ofMillis(20000L))
+              .setInitialRpcTimeout(Duration.ofMillis(30000L))
+              .setRpcTimeoutMultiplier(1.3)
+              .setMaxRpcTimeout(Duration.ofMillis(90000L))
               .setTotalTimeout(Duration.ofMillis(600000L))
               .build();
       definitions.put("default", settings);

synth.metadata

@@ -1,20 +1,20 @@
 {
-  "updateTime": "2020-02-29T22:42:27.013854Z",
+  "updateTime": "2020-03-12T09:00:00.218312Z",
   "sources": [
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       "generator": {
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-        "dockerImage": "googleapis/artman@sha256:b3e50d6b8de03920b9f065bbc3d210e2ca93a043446f1fa16cdf567393c09678"
+        "version": "1.1.0",
+        "dockerImage": "googleapis/artman@sha256:f54b7644a1d2e7a37b23f5c0dfe9bba473e41c675002a507a244389e27487ca9"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "83c6f84035ee0f80eaa44d8b688a010461cc4080",
-        "internalRef": "297918498",
-        "log": "83c6f84035ee0f80eaa44d8b688a010461cc4080\nUpdate google/api/auth.proto to make AuthProvider to have JwtLocation\n\nPiperOrigin-RevId: 297918498\n\ne9e90a787703ec5d388902e2cb796aaed3a385b4\nDialogflow weekly v2/v2beta1 library update:\n  - adding get validation result\n  - adding field mask override control for output audio config\nImportant updates are also posted at:\nhttps://cloud.google.com/dialogflow/docs/release-notes\n\nPiperOrigin-RevId: 297671458\n\n1a2b05cc3541a5f7714529c665aecc3ea042c646\nAdding .yaml and .json config files.\n\nPiperOrigin-RevId: 297570622\n\ndfe1cf7be44dee31d78f78e485d8c95430981d6e\nPublish `QueryOptions` proto.\n\nIntroduced a `query_options` input in `ExecuteSqlRequest`.\n\nPiperOrigin-RevId: 297497710\n\ndafc905f71e5d46f500b41ed715aad585be062c3\npubsub: revert pull init_rpc_timeout & max_rpc_timeout back to 25 seconds and reset multiplier to 1.0\n\nPiperOrigin-RevId: 297486523\n\nf077632ba7fee588922d9e8717ee272039be126d\nfirestore: add update_transform\n\nPiperOrigin-RevId: 297405063\n\n0aba1900ffef672ec5f0da677cf590ee5686e13b\ncluster: use square brace for cross-reference\n\nPiperOrigin-RevId: 297204568\n\n5dac2da18f6325cbaed54603c43f0667ecd50247\nRestore retry params in gapic config because securitycenter has non-standard default retry params.\nRestore a few retry codes for some idempotent methods.\n\nPiperOrigin-RevId: 297196720\n\n1eb61455530252bba8b2c8d4bc9832960e5a56f6\npubsub: v1 replace IAM HTTP rules\n\nPiperOrigin-RevId: 297188590\n\n80b2d25f8d43d9d47024ff06ead7f7166548a7ba\nDialogflow weekly v2/v2beta1 library update:\n  - updates to mega agent api\n  - adding field mask override control for output audio config\nImportant updates are also posted at:\nhttps://cloud.google.com/dialogflow/docs/release-notes\n\nPiperOrigin-RevId: 297187629\n\n0b1876b35e98f560f9c9ca9797955f020238a092\nUse an older version of protoc-docs-plugin that is compatible with the specified gapic-generator and protobuf versions.\n\nprotoc-docs-plugin >=0.4.0 (see commit https://github.com/googleapis/protoc-docs-plugin/commit/979f03ede6678c487337f3d7e88bae58df5207af) is incompatible with protobuf 3.9.1.\n\nPiperOrigin-RevId: 296986742\n\n"
+        "sha": "34a5450c591b6be3d6566f25ac31caa5211b2f3f",
+        "internalRef": "300474272",
+        "log": "34a5450c591b6be3d6566f25ac31caa5211b2f3f\nIncreases the default timeout from 20s to 30s for MetricService\n\nPiperOrigin-RevId: 300474272\n\n5d8bffe87cd01ba390c32f1714230e5a95d5991d\nfeat: use the latest gapic-generator in WORKSPACE for bazel build.\n\nPiperOrigin-RevId: 300461878\n\nd631c651e3bcfac5d371e8560c27648f7b3e2364\nUpdated the GAPIC configs to include parameters for Backups APIs.\n\nPiperOrigin-RevId: 300443402\n\n678afc7055c1adea9b7b54519f3bdb228013f918\nAdding Game Servers v1beta API.\n\nPiperOrigin-RevId: 300433218\n\n80d2bd2c652a5e213302041b0620aff423132589\nEnable proto annotation and gapic v2 for talent API.\n\nPiperOrigin-RevId: 300393997\n\n85e454be7a353f7fe1bf2b0affb753305785b872\ndocs(google/maps/roads): remove mention of nonexported api\n\nPiperOrigin-RevId: 300367734\n\nbf839ae632e0f263a729569e44be4b38b1c85f9c\nAdding protocol buffer annotations and updated config info for v1 and v2.\n\nPiperOrigin-RevId: 300276913\n\n309b899ca18a4c604bce63882a161d44854da549\nPublish `Backup` APIs and protos.\n\nPiperOrigin-RevId: 300246038\n\neced64c3f122421350b4aca68a28e89121d20db8\nadd PHP client libraries\n\nPiperOrigin-RevId: 300193634\n\n7727af0e39df1ae9ad715895c8576d7b65cf6c6d\nfeat: use the latest gapic-generator and protoc-java-resource-name-plugin in googleapis/WORKSPACE.\n\nPiperOrigin-RevId: 300188410\n\n2a25aa351dd5b5fe14895266aff5824d90ce757b\nBreaking change: remove the ProjectOrTenant resource and its references.\n\nPiperOrigin-RevId: 300182152\n\na499dbb28546379415f51803505cfb6123477e71\nUpdate web risk v1 gapic config and BUILD file.\n\nPiperOrigin-RevId: 300152177\n\n52701da10fec2a5f9796e8d12518c0fe574488fe\nFix: apply appropriate namespace/package options for C#, PHP and Ruby.\n\nPiperOrigin-RevId: 300123508\n\n365c029b8cdb63f7751b92ab490f1976e616105c\nAdd CC targets to the kms protos.\n\nThese are needed by go/tink.\n\nPiperOrigin-RevId: 300038469\n\n4ba9aa8a4a1413b88dca5a8fa931824ee9c284e6\nExpose logo recognition API proto for GA.\n\nPiperOrigin-RevId: 299971671\n\n1c9fc2c9e03dadf15f16b1c4f570955bdcebe00e\nAdding ruby_package option to accessapproval.proto for the Ruby client libraries generation.\n\nPiperOrigin-RevId: 299955924\n\n1cc6f0a7bfb147e6f2ede911d9b01e7a9923b719\nbuild(google/maps/routes): generate api clients\n\nPiperOrigin-RevId: 299955905\n\n29a47c965aac79e3fe8e3314482ca0b5967680f0\nIncrease timeout to 1hr for method `dropRange` in bigtable/admin/v2, which is\nsynced with the timeout setting in gapic_yaml.\n\nPiperOrigin-RevId: 299917154\n\n8f631c4c70a60a9c7da3749511ee4ad432b62898\nbuild(google/maps/roads/v1op): move go to monorepo pattern\n\nPiperOrigin-RevId: 299885195\n\nd66816518844ebbf63504c9e8dfc7133921dd2cd\nbuild(google/maps/roads/v1op): Add bazel build files to generate clients.\n\nPiperOrigin-RevId: 299851148\n\naf7dff701fabe029672168649c62356cf1bb43d0\nAdd LogPlayerReports and LogImpressions to Playable Locations service\n\nPiperOrigin-RevId: 299724050\n\nb6927fca808f38df32a642c560082f5bf6538ced\nUpdate BigQuery Connection API v1beta1 proto: added credential to CloudSqlProperties.\n\nPiperOrigin-RevId: 299503150\n\n91e1fb5ef9829c0c7a64bfa5bde330e6ed594378\nchore: update protobuf (protoc) version to 3.11.2\n\nPiperOrigin-RevId: 299404145\n\n30e36b4bee6749c4799f4fc1a51cc8f058ba167d\nUpdate cloud asset api v1p4beta1.\n\nPiperOrigin-RevId: 299399890\n\nffbb493674099f265693872ae250711b2238090c\nfeat: cloudbuild/v1 add new fields and annotate OUTPUT_OUT fields.\n\nPiperOrigin-RevId: 299397780\n\nbc973a15818e00c19e121959832676e9b7607456\nbazel: Fix broken common  dependency\n\nPiperOrigin-RevId: 299397431\n\n71094a343e3b962e744aa49eb9338219537474e4\nchore: bigtable/admin/v2 publish retry config\n\nPiperOrigin-RevId: 299391875\n\n8f488efd7bda33885cb674ddd023b3678c40bd82\nfeat: Migrate logging to GAPIC v2; release new features.\n\nIMPORTANT: This is a breaking change for client libraries\nin all languages.\n\nCommitter: @lukesneeringer, @jskeet\nPiperOrigin-RevId: 299370279\n\n007605bf9ad3a1fd775014ebefbf7f1e6b31ee71\nUpdate API for bigqueryreservation v1beta1.\n- Adds flex capacity commitment plan to CapacityCommitment.\n- Adds methods for getting and updating BiReservations.\n- Adds methods for updating/splitting/merging CapacityCommitments.\n\nPiperOrigin-RevId: 299368059\n\nf0b581b5bdf803e45201ecdb3688b60e381628a8\nfix: recommendationengine/v1beta1 update some comments\n\nPiperOrigin-RevId: 299181282\n\n10e9a0a833dc85ff8f05b2c67ebe5ac785fe04ff\nbuild: add generated BUILD file for Routes Preferred API\n\nPiperOrigin-RevId: 299164808\n\n86738c956a8238d7c77f729be78b0ed887a6c913\npublish v1p1beta1: update with absolute address in comments\n\nPiperOrigin-RevId: 299152383\n\n73d9f2ad4591de45c2e1f352bc99d70cbd2a6d95\npublish v1: update with absolute address in comments\n\nPiperOrigin-RevId: 299147194\n\nd2158f24cb77b0b0ccfe68af784c6a628705e3c6\npublish v1beta2: update with absolute address in comments\n\nPiperOrigin-RevId: 299147086\n\n7fca61292c11b4cd5b352cee1a50bf88819dd63b\npublish v1p2beta1: update with absolute address in comments\n\nPiperOrigin-RevId: 299146903\n\n583b7321624736e2c490e328f4b1957335779295\npublish v1p3beta1: update with absolute address in comments\n\nPiperOrigin-RevId: 299146674\n\n638253bf86d1ce1c314108a089b7351440c2f0bf\nfix: add java_multiple_files option for automl text_sentiment.proto\n\nPiperOrigin-RevId: 298971070\n\n373d655703bf914fb8b0b1cc4071d772bac0e0d1\nUpdate Recs AI Beta public bazel file\n\nPiperOrigin-RevId: 298961623\n\ndcc5d00fc8a8d8b56f16194d7c682027b2c66a3b\nfix: add java_multiple_files option for automl classification.proto\n\nPiperOrigin-RevId: 298953301\n\na3f791827266f3496a6a5201d58adc4bb265c2a3\nchore: automl/v1 publish annotations and retry config\n\nPiperOrigin-RevId: 298942178\n\n01c681586d8d6dbd60155289b587aee678530bd9\nMark return_immediately in PullRequest deprecated.\n\nPiperOrigin-RevId: 298893281\n\nc9f5e9c4bfed54bbd09227e990e7bded5f90f31c\nRemove out of date documentation for predicate support on the Storage API\n\nPiperOrigin-RevId: 298883309\n\nfd5b3b8238d783b04692a113ffe07c0363f5de0f\ngenerate webrisk v1 proto\n\nPiperOrigin-RevId: 298847934\n\n541b1ded4abadcc38e8178680b0677f65594ea6f\nUpdate cloud asset api v1p4beta1.\n\nPiperOrigin-RevId: 298686266\n\nc0d171acecb4f5b0bfd2c4ca34fc54716574e300\n  Updated to include the Notification v1 API.\n\nPiperOrigin-RevId: 298652775\n\n2346a9186c0bff2c9cc439f2459d558068637e05\nAdd Service Directory v1beta1 protos and configs\n\nPiperOrigin-RevId: 298625638\n\na78ed801b82a5c6d9c5368e24b1412212e541bb7\nPublishing v3 protos and configs.\n\nPiperOrigin-RevId: 298607357\n\n4a180bfff8a21645b3a935c2756e8d6ab18a74e0\nautoml/v1beta1 publish proto updates\n\nPiperOrigin-RevId: 298484782\n\n6de6e938b7df1cd62396563a067334abeedb9676\nchore: use the latest gapic-generator and protoc-java-resource-name-plugin in Bazel workspace.\n\nPiperOrigin-RevId: 298474513\n\n244ab2b83a82076a1fa7be63b7e0671af73f5c02\nAdds service config definition for bigqueryreservation v1\n\nPiperOrigin-RevId: 298455048\n\n"
       }
     },
     {