Automatic merge from submit-queue (batch tested with PRs 41364, 40317, 41326, 41783, 41782)

Add ability to enable cache mutation detector in GCE

Add the ability to enable the cache mutation detector in GCE. The current default behavior (disabled) is retained.

When paired with https://github.com/kubernetes/test-infra/pull/1901, we'll be able to detect shared informer cache mutations in gce e2e PR jobs.