Use 16vcpu node for plugin jobs

We're using this for the gerrit build, we may as well for the plugins
as well.

Change-Id: Id3cc1b03d44294433c16eecea55f2f1723439607
1 file changed
tree: ff4ba224968f6b06c4e88d48de6f4383ba004ff2
  1. .gitreview
  2. LICENSE
  3. README
  4. playbooks/
  5. roles/
  6. zuul.d/