Merge changes from topic "istanbul-support"
* changes:
[ANSIBLE] Add ghcr.io to simulated hosts list
[DOC] Update changelog
[ANSIBLE] Setup cmctl autocompletion
[ANSIBLE] Install cmctl utility
[BUILD] Add download link for cmctl utility to binaries list
[ANSIBLE] Add cert-manager provisioning playbook
[BUILD] Fetch artifacts required by cert-manager
[ANSIBLE] Add cert-manager role
[MOLECULE] Add prepare-cert-manager role
[DOC] Update changelog
[MOLECULE] Upgrade Helm3 release to 3.6.3 in test scenarios
[BUILD] Upgrade Helm to 3.6.3