Cross compile plugins for Gerrit v3.0

Build plugins on their master branch targeting Gerrit v3.0.
The list of plugins is limited to the ones that were already
compatible with multiple versions of Gerrit at the same time.

Change-Id: I9f441aadda22f9f54725f016496c7f3cdbecad70
16 files changed
tree: 79fedf922c1f13a3aaddfccf45d7ea0e73e91d5b
  1. jenkins/
  2. jenkins-docker/
  3. worker/
  4. .gitignore