Use git_tag plugin to track the latest tag
We've longed for tracking the latest tag of a git source to be part of BuildStream (see BuildStream/buildstream#220 (closed))
It was implemented on this open MR. This MR applies the changes to create a custom plugin for git with this functionality, and sets all git elements to track the latest tag by default.
See #21 (closed)
Edited by Tom Coldrick