Delete tag via API
What does this MR do?
Implements deleting a tag via the API.
Are there points in the code the reviewer needs to double check?
On success, it returns the name of the deleted tag. This is similar to the delete branch API.
What are the relevant issue numbers / Feature requests?
- This MR closes #1575 (closed)
- Closes http://feedback.gitlab.com/forums/176466-general/suggestions/6599203-delete-tags-through-the-api
@stanhu Could you do a review?