AGENT-1431: Backport feature NoRegistryClusterInstall to 4.21#642

pawanpinjarkar wants to merge 2 commits intoopenshift:release-4.21openshift/appliance:release-4.21from

pawanpinjarkar:cherrypick-agent-1313pawanpinjarkar/appliance:cherrypick-agent-1313Copy head branch name to clipboard