Support the spec.configmanagement.configSync.stopSyncing field in GKEHubFeatureMembership

[haiyanmeng]

Change description

This adds the support for the spec.configmanagement.configSync.stopSyncing field into the resource GKEHubFeatureMembership.

This PR needs a release note.

Tests you have done

E2E_KUBE_TARGET=envtest RUN_E2E=1 E2E_GCP_TARGET=mock WRITE_GOLDEN_OUTPUT=1 GOLDEN_REQUEST_CHECKS=1 GOLDEN_OBJECT_CHECKS=1 go test -test.count=1 -timeout 1000s -v ./tests/e2e -run 'TestAllInSeries/fixtures/gkehubfeaturemembership|TestAllInSeries/fixtures/gkehubfeaturemembership'

• Run make ready-pr to ensure this PR is ready for review.
• Perform necessary E2E testing for changed resources.

[haiyanmeng]

/cc @ziyue-101

[haiyanmeng]

/assign @acpana

[ziyue-101]

/lgtm

leave approval to @acpana

[yuwenma]

/approve

Thanks! Assigned to @acpana for another pass for GKEHub resources.

[yuwenma]

/hold

[haiyanmeng]

@yuwenma , I saw you put the PR on hold. Are there any action items for me?

[yuwenma]

@yuwenma , I saw you put the PR on hold. Are there any action items for me?

No action items. I just want to make sure @acpana can take a look before it merges.

[acpana]

/lgtm
/approve

thanks for the change 🥇

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: acpana, yuwenma

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[acpana]

/hold cancel