Avoid polluting main Jenkins log with tons of messages about normally completed builds.
Especially noisy for Maven projects with many modules:
2014-…+0000 [id=…]	INFO	c.s.h.p.g.t.g.ToGerritRunListener#onCompleted: Completed. Build: folder/job/groupId:artifactId #99 Cause: null
Merge pull request #147 from jglick/ToGerritRunListener-please-be-quiet

Make ToGerritRunListener quieter