fix: set default registryCredentials to null
requested to merge 98-default-registrycredential-value-results-in-bad-private-registry-secret into master
Summary
Fix #98 (closed) by setting default values.registryCredentials to null value.
Relevant logs/screenshots
Invalid private-registry secret is no longer created:
% kubectl get secrets -n gatekeeper-system private-registry -oyaml
Error from server (NotFound): secrets "private-registry" not foundCloses #98 (closed)