chore: migrate to microgenerator

[yoshi-automation]

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PiperOrigin-RevId: 346372957
Source-Link: googleapis/googleapis@857f70d
PiperOrigin-RevId: 346126713
Source-Link: googleapis/googleapis@b8b2f8c
PiperOrigin-RevId: 345749670
Source-Link: googleapis/googleapis@dcef555

[generated-files-bot]

Warning: This pull request is touching the following templated files:

• .github/CODEOWNERS
• google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerClient.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/ClusterManagerSettings.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/package-info.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStub.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/ClusterManagerStubSettings.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerCallableFactory.java
• google-cloud-container/src/main/java/com/google/cloud/container/v1/stub/GrpcClusterManagerStub.java
• google-cloud-container/src/test/java/com/google/cloud/container/v1/ClusterManagerClientTest.java
• google-cloud-container/src/test/java/com/google/cloud/container/v1/ClusterManagerSmokeTest.java
• google-cloud-container/src/test/java/com/google/cloud/container/v1/MockClusterManager.java
• google-cloud-container/src/test/java/com/google/cloud/container/v1/MockClusterManagerImpl.java

[codecov]

Codecov Report

Merging #320 (2f0d836) into master (6543b26) will increase coverage by 5.13%.
The diff coverage is 74.58%.

@@             Coverage Diff              @@
##             master     #320      +/-   ##
============================================
+ Coverage     81.91%   87.04%   +5.13%     
- Complexity      202      238      +36     
============================================
  Files             7        7              
  Lines          1570     1667      +97     
  Branches          3        3              
============================================
+ Hits           1286     1451     +165     
+ Misses          282      214      -68     
  Partials          2        2              

Impacted Files	Coverage Δ	Complexity Δ
...oogle/cloud/container/v1/ClusterManagerClient.java	95.05% <ø> (+20.05%)	151.00 <0.00> (+36.00)
...le/cloud/container/v1/stub/ClusterManagerStub.java	2.94% <ø> (ø)	1.00 <0.00> (ø)
.../container/v1/stub/ClusterManagerStubSettings.java	86.30% <44.30%> (+0.03%)	42.00 <0.00> (ø)
...gle/cloud/container/v1/ClusterManagerSettings.java	7.69% <50.00%> (ø)	2.00 <0.00> (ø)
...loud/container/v1/stub/GrpcClusterManagerStub.java	98.60% <98.98%> (+0.04%)	39.00 <1.00> (ø)
...ner/v1/stub/GrpcClusterManagerCallableFactory.java	37.50% <100.00%> (ø)	3.00 <1.00> (ø)

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