GitLab

Summary:
Add triggers for RC branches and tags to all build workflows. This will ensure that the release-candidate builds will run with `CHANNEL=test`.

Pull Request resolved: https://github.com/pytorch/audio/pull/3057

Reviewed By: atalman

Differential Revision: D43279657

Pulled By: osalpekar

fbshipit-source-id: 5abf3994b9b4a4897f53c540bd1db6c3d624b3e0