chore(java11): Turn on the cross-compiler plugin in Dockerfile.compile (#1119)
chore(java11): Turn on the cross-compiler plugin in Dockerfile.compile (#1119)

This got missed because my script tries to add it before `--no-daemon`.
So go ahead and add that too, for consistency and because otherwise
GRADLE_OPTS does nothing useful.
spinnaker/gate,spinnaker/gate,spinnaker/gate