CNG pipelines run release on every trigger
When triggering a pipeline in https://gitlab.com/gitlab-org/build/CNG, the pipeline runs release job.
This was the original intention as we hooked tagging in CE/EE to building tagged images.
However, with implementation of Review Apps we need to be able to trigger jobs on demand, on non-tagged versions. This pipeline should not run a release task.
I suggest we pass a REVIEW_APP = true
environmental variable for all review app pipelines that would make a release job a noop.
Open to other suggestions too. cc @twk3