Start import process for clouddocs-maven-plugin.

Add clouddocs-maven-plugin to the list of projects and assign the
gate-noop jobs to its check and gate queues.

related-bug: #1082812
Change-Id: I646d5e67ff50fbe5de2ae5d55dbdd079456e4a7c
Merge "Start import process for clouddocs-maven-plugin."