Update plugin with DownloadCommand enum move

The corelative Gerrit change is:
https://gerrit-review.git.corp.google.com/c/gerrit/+/381374

Change-Id: I63d0cbacc491721e6a13fbb1ae2d206449e9d75f
7 files changed
tree: dab7d251222c2d42745b53e5a47a55f8fb5d0009
  1. src/
  2. .gitignore
  3. BUILD
  4. LICENSE
  5. README.md
README.md

Gerrit download-commands plugin

All documentation may be found under src/main/resources/Documentation/.