Remove airship/berth from infra

This removes the airship/berth project from OpenStack Infra,
as agreed upon at the Denver PTG and in subsequent Airship
IRC team meetings.

The PS to zero-out the project has already merged:
https://review.opendev.org/#/c/670924/

Change-Id: Ibd6c51710bce82baa79d6733064f69f3f0e2c8e8

gerrit/projects.yaml

@@ -16,11 +16,8 @@
   groups:
     - airship
 - project: airship/berth
-  description: A minimalist VM runner for Kubernetes using Helm.
-  use-storyboard: true
-  acl-config: /home/gerrit2/acls/airship/airship.config
-  groups:
-    - airship
+  description: RETIRED, A minimalist VM runner for Kubernetes using Helm.
+  acl-config: /home/gerrit2/acls/openstack/retired.config
 - project: airship/deckhand
   description: A configuration management service with support for secrets.
   use-storyboard: true

zuul.d/projects.yaml

@@ -24,11 +24,6 @@
     gate:
       queue: starlingx
 
-- project:
-    name: airship/berth
-    templates:
-      - noop-jobs
-
 - project:
     name: airship/utils
     templates:

zuul/main.yaml

@@ -88,7 +88,6 @@
           - airship/airship-in-a-bottle
           - airship/airshipctl
           - airship/armada
-          - airship/berth
           - airship/deckhand
           - airship/divingbell
           - airship/docs