Configure no-quorum-policy for Pacemaker

This change makes sure that the no-quorum-policy parameter is 'stop'
when there are at least 3 nodes and 'ignore' otherwise.

Change-Id: If65beaa9dbff0f52b3b369d9763d8b52ff110bfd

deployment_scripts/puppet/manifests/enable_quorum.pp

@@ -0,0 +1,33 @@
+#    Copyright 2016 Mirantis, Inc.
+#
+#    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.
+#
+
+prepare_network_config(hiera('network_scheme', {}))
+$corosync_roles = hiera_array('lma::corosync_roles')
+$network_metadata = hiera('network_metadata')
+$nodes = get_nodes_hash_by_roles($network_metadata, $corosync_roles)
+
+if count($nodes) > 2 {
+  $policy = 'stop'
+} else {
+  $policy = 'ignore'
+}
+
+# The default provider ('pcs') fails to change the property's value so we have
+# to force the use of 'crm'
+cs_property { 'no-quorum-policy':
+  ensure   => present,
+  value    => $policy,
+  provider => 'crm',
+}

deployment_tasks.yaml

@@ -92,3 +92,16 @@
   # reexecute_on is needed for scale-down operations
   reexecute_on:
     - deploy_changes
+
+- id: influxdb-enable-quorum
+  type: puppet
+  role: [primary-influxdb_grafana]
+  requires: [post_deployment_start]
+  required_for: [post_deployment_end]
+  parameters:
+    puppet_manifest: "puppet/manifests/enable_quorum.pp"
+    puppet_modules: "puppet/modules"
+    timeout: 120
+  # reexecute_on is needed for scale-down operations
+  reexecute_on:
+    - deploy_changes