Remove CI variable MAJOR
Why is this change being made?
As part of changes needed for gitlab-org/gitlab#360026 (closed), we need to be able to release to multiple MAJOR
versions.
- Merge stages
release-version
andrelease-major
into a single stagerelease
- Remove dependency on CI variable
MAJOR
- Make "docker tag" jobs a little more consistent
Edited by Thiago Figueiró