GitLab CE Push Mirroring does not push automatically when a new tag is created

Summary

GitLab CE Push Mirroring, unlike commits, does not push tags automatically to the remote mirror.

Steps to reproduce

1. Have remote push mirroring set up on a project.
2. Push a new tag to GitLab CE.
3. Observe the lack of an update to the remote mirror.

What is the current bug behavior?

GitLab CE does not push tags automatically and requires a manual push.

What is the expected correct behavior?

GitLab CE should push tags to the remote mirror automatically as it does with commits.