fix: use process versions object for client header (#563)

Author: yoshi-automation

src/v2/config_service_v2_client.js

@@ -82,7 +82,7 @@ class ConfigServiceV2Client {
 
     // Determine the client header string.
     const clientHeader = [
-      `gl-node/${process.versions.node}`,
+      `gl-node/${process.version}`,
       `grpc/${gaxGrpc.grpcVersion}`,
       `gax/${gax.version}`,
       `gapic/${VERSION}`,

src/v2/logging_service_v2_client.js

@@ -82,7 +82,7 @@ class LoggingServiceV2Client {
 
     // Determine the client header string.
     const clientHeader = [
-      `gl-node/${process.versions.node}`,
+      `gl-node/${process.version}`,
       `grpc/${gaxGrpc.grpcVersion}`,
       `gax/${gax.version}`,
       `gapic/${VERSION}`,

src/v2/metrics_service_v2_client.js

@@ -81,7 +81,7 @@ class MetricsServiceV2Client {
 
     // Determine the client header string.
     const clientHeader = [
-      `gl-node/${process.versions.node}`,
+      `gl-node/${process.version}`,
       `grpc/${gaxGrpc.grpcVersion}`,
       `gax/${gax.version}`,
       `gapic/${VERSION}`,

synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-08-02T11:19:20.863807Z",
+  "updateTime": "2019-08-20T11:16:25.568311Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.32.0",
-        "dockerImage": "googleapis/artman@sha256:6929f343c400122d85818195b18613330a12a014bffc1e08499550d40571479d"
+        "version": "0.33.0",
+        "dockerImage": "googleapis/artman@sha256:c6231efb525569736226b1f7af7565dbc84248efafb3692a5bb1d2d8a7975d53"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "3a40d3a5f5e5a33fd49888a8a33ed021f65c0ccf",
-        "internalRef": "261297518"
+        "sha": "4bb50a3e4c8d49d1cec1a98434cccaeaec55a886",
+        "internalRef": "264193378"
       }
     },
     {