request #7592: Be more verbose in git logging

- Use TruncateLevelLogger,
- Add log entries for every push in gitolite admin
- Add log entries for every repo update
- Add log entries for every repo deletion

Change-Id: Ia10920b3f3f09fe8124ff6dd244d61d3790f5a2f
Merge commit 'refs/changes/89/3189/1' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7592: Be more verbose in git logging

Change-Id: I548f545be32af5d110b337866ef1946e9331dda9
This is Tuleap 7.6.99.34

Change-Id: I5d8f31e71b1be291bb8d173c376a6753cf85cd7f