pubsub: add config for new methods (#407)

google/pubsub/v1/pubsub_gapic.yaml

@@ -295,6 +295,18 @@ interfaces:
       name: snapshot
       subscription: subscription
     timeout_millis: 60000
+  - name: UpdateSnapshot
+    required_fields:
+    - snapshot
+    - update_mask
+    request_object_method: true
+    retry_codes_name: idempotent
+    retry_params_name: default
+    timeout_millis: 60000
+    surface_treatments:
+    - include_languages:
+      - java
+      visibility: PACKAGE
   - name: DeleteSnapshot
     flattening:
       groups:
@@ -445,6 +457,18 @@ interfaces:
     field_name_patterns:
       name: topic
     timeout_millis: 60000
+  - name: UpdateTopic
+    required_fields:
+    - topic
+    - update_mask
+    request_object_method: true
+    retry_codes_name: idempotent
+    retry_params_name: default
+    timeout_millis: 60000
+    surface_treatments:
+    - include_languages:
+      - java
+      visibility: PACKAGE
   - name: Publish
     flattening:
       groups: