Automatic merge from submit-queue
Add DaemonSet templateGeneration validation and tests, and fix a bunch of validation test errors
For DaemonSet update:
1. Validate that templateGeneration is increased when and only when template is changed
1. Validate that templateGeneration is never decreased
1. Added validation tests for templateGeneration
1. Fix a bunch of errors in validate tests
- fake tests: almost all validation test error cases failed on "missing resource version", "name changes", "missing update strategy", "selector/template labels mismatch", not on the real validation we wanted to test
- some error cases should be success cases
@kargakis @lukaszo @kubernetes/sig-apps-bugs
*I've verified locally that all DaemonSet e2e tests pass with this change.*
a8d8542fc7