Comment 3 for bug 1227985

Deployed a VM with gerrit/git.

If I run the following commands to create and push a tag to gerrit:

<snip>
git tag -a 2014.06.03 -m "March release"
git push gerrit 2014.06.03
</snip>

then gerrit events stream logs that action as:

<snip>
{"type":"ref-updated","submitter":{"name":"Ricardo Carrillo Cruz","email":"<email address hidden>","username":"rcarrillocruz"},"refUpdate":{"oldRev":"0000000000000000000000000000000000000000","newRev":"b3510fbe11adeba89abb03db451b83e86ba4abce","refName":"refs/tags/2014.06.03","project":"demo/gerrittest"}}
</snip>

So now it's a matter of adding a method to the Gerrit class in bot.py that handles the 'ref-updated' event and checks whether the 'refName' field to contain a release tag.