feat(servicemanagement): update the API

#### servicemanagement:v1
The following keys were added:
- schemas.Binding.properties.bindingId.type

discovery/servicemanagement-v1.json

@@ -857,7 +857,7 @@
       }
     }
   },
-  "revision": "20201023",
+  "revision": "20201103",
   "rootUrl": "https://servicemanagement.googleapis.com/",
   "schemas": {
     "Advice": {
@@ -1172,6 +1172,9 @@
       "description": "Associates `members` with a `role`.",
       "id": "Binding",
       "properties": {
+        "bindingId": {
+          "type": "string"
+        },
         "condition": {
           "$ref": "Expr",
           "description": "The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies)."

src/apis/servicemanagement/v1.ts

@@ -342,6 +342,7 @@ export namespace servicemanagement_v1 {
    * Associates `members` with a `role`.
    */
   export interface Schema$Binding {
+    bindingId?: string | null;
     /**
      * The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
      */