Add VersionedManifests

VersionedManifests extends VersionedMetaData so that manifests in a git
commit can be retrieved and saved.

org.eclipse.jgit.junit is added at a version that is supported in Gerrit
2.9.1 so that a mock git repo/commit can be created for tests.

Change-Id: I15cc5bea49e32aa99169dfdffab663b9f21c52be
3 files changed
tree: 15e41b6c930a9ffd7c73a4c7732a70df36408225
  1. src/
  2. .gitignore
  4. pom.xml