Retire the puppet-congress project - Step 1 End Project Gating

Unfortunately Congress project has been retired already[1], so it is
useless to maintain puppet modules for it.

The annoucement can be found in the following link.
 http://lists.openstack.org/pipermail/openstack-discuss/2020-June/015555.html

[1] https://review.opendev.org/#/c/721742/

Change-Id: I048f7b736d44abd3b76f589d69048e2d2f7a78ce
Needed-by: https://review.opendev.org/#/c/731770/

zuul.d/projects.yaml

@@ -4646,7 +4646,7 @@
     name: openstack/puppet-congress
     templates:
       - official-openstack-repo-jobs
-      - puppet-release-jobs
+      - noop-jobs
 
 - project:
     name: openstack/puppet-designate