Add documentation on certified images
Adds documentation on the images certified by RedHat.
Changelog: added
Related to https://gitlab.com/gitlab-org/cloud-native/gitlab-operator/-/issues/686.
Edited by Mitchell Nielsen
Adds documentation on the images certified by RedHat.
Changelog: added
Related to https://gitlab.com/gitlab-org/cloud-native/gitlab-operator/-/issues/686.