Automatic merge from submit-queue (batch tested with PRs 46149, 45897, 46293, 46296, 46194)

GC: update required verbs for deletable resources, allow list of ignored resources to be customized

The garbage collector controller currently needs to list, watch, get,
patch, update, and delete resources. Update the criteria for
deletable resources to reflect this.

Also allow the list of resources the garbage collector controller should
ignore to be customizable, so downstream integrators can add their own
resources to the list, if necessary.

cc @caesarxuchao @deads2k @smarterclayton @mfojtik @liggitt @sttts @kubernetes/sig-api-machinery-pr-reviews