Retire craton (1/2)

The development of craton has stopped around March 2017, we can retire
the repositories now.

This is the first step in retiring them.

See also
http://lists.openstack.org/pipermail/openstack-dev/2018-January/126341.html

Change-Id: If620605a9e441e136c51890f33e139edf9bc0f6b

zuul.d/projects.yaml

@@ -4390,42 +4390,13 @@
     name: openstack/craton
     templates:
       - system-required
-      - docs-on-readthedocs
-      - openstack-python35-jobs
-      - build-openstack-sphinx-docs
-    check:
-      jobs:
-        - openstack-tox-pep8
-        - openstack-tox-functional
-    gate:
-      jobs:
-        - openstack-tox-pep8
-        - openstack-tox-functional
+      - noop-jobs
 
 - project:
     name: openstack/craton-dashboard
     templates:
       - system-required
-      - openstack-python-jobs
-      - openstack-python35-jobs-nonvoting
-    check:
-      jobs:
-        - nodejs-npm-run-lint:
-            vars:
-              node_version: 4
-        - nodejs-npm-run-test:
-            vars:
-              node_version: 4
-            voting: false
-        - horizon-openstack-tox-py27dj19
-        - horizon-openstack-tox-py27dj110
-    gate:
-      jobs:
-        - nodejs-npm-run-lint:
-            vars:
-              node_version: 4
-        - horizon-openstack-tox-py27dj19
-        - horizon-openstack-tox-py27dj110
+      - noop-jobs
 
 - project:
     name: openstack/cue
@@ -13593,10 +13564,7 @@
     name: openstack/python-cratonclient
     templates:
       - system-required
-      - openstack-python-jobs
-      - check-requirements
-      - docs-on-readthedocs
-      - openstack-python35-jobs
+      - noop-jobs
 
 - project:
     name: openstack/python-cueclient