Allow specification of image.tagExtension to support easy configuration of UBI container usage
Summary
Split from #1617 (closed), Implement gitlab.image.tagExtension to complete support for UBI behaviors. This will need some extensive work to the GitLab maintained charts, to inject a suffix to image.tag when populated.
Details
Item 5: defining UBI via single flag.
This would not be a tag, but rather an method to automatically append an extension to the tag, so that when appVersion: 13.0.1, the rendered tag value is 13.0.1-ubi8. We should not require manually setting every single image tag. It's just an abhorrent user experience.
This could be in Major or Minor, in my opinion.
Edited by Jason Plum