Switch zuul and zuul-dev to project-config

Start using the project-config repo for Zuul.  Stop managing
/etc/zuul/layout in the zuul module itself in favor of the
project_config module.

Change-Id: I46ddb22c53783c0cffa665959f708b0568abd25f

manifests/init.pp

@@ -0,0 +1,35 @@
+# Copyright 2014 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# Class: project_config
+#
+
+class project_config(
+  $url = '',
+  $base = '',
+) {
+
+  $config_dir = Vcsrepo['/etc/project-config']
+
+  if (!defined($config_dir)) {
+    vcsrepo { '/etc/project-config':
+      ensure   => latest,
+      provider => git,
+      revision => 'master',
+      source   => $url,
+    }
+  }
+
+  $zuul_layout_dir = "/etc/project-config/${base}zuul"
+}