Add support for the deployment of Ceph MDS

This change adds a CephMds service, disabled by default, on the
Controller role and an environment file to enable it.

Change-Id: If7cb46319038a80ed52f753a623989885e1b7da4
Depends-On: Iaecc3ff7acb851776c5057c42a5a513a70425d2c
Partial-Bug: #1644784

environments/services/ceph-mds.yaml

@@ -0,0 +1,2 @@
+resource_registry:
+  OS::TripleO::Services::CephMds: ../../puppet/services/ceph-mds.yaml

overcloud-resource-registry-puppet.j2.yaml

@@ -117,6 +117,7 @@ resource_registry:
   OS::TripleO::Services::Apache: puppet/services/apache.yaml
   OS::TripleO::Services::ApacheTLS: OS::Heat::None
   OS::TripleO::Services::CACerts: puppet/services/ca-certs.yaml
+  OS::TripleO::Services::CephMds: OS::Heat::None
   OS::TripleO::Services::CephMon: OS::Heat::None
   OS::TripleO::Services::CephRgw: OS::Heat::None
   OS::TripleO::Services::CephOSD: OS::Heat::None

puppet/services/ceph-mds.yaml

@@ -0,0 +1,49 @@
+heat_template_version: ocata
+
+description: >
+  Ceph MDS service.
+
+parameters:
+  ServiceNetMap:
+    default: {}
+    description: Mapping of service_name -> network name. Typically set
+                 via parameter_defaults in the resource registry.  This
+                 mapping overrides those in ServiceNetMapDefaults.
+    type: json
+  DefaultPasswords:
+    default: {}
+    type: json
+  EndpointMap:
+    default: {}
+    description: Mapping of service endpoint -> protocol. Typically set
+                 via parameter_defaults in the resource registry.
+    type: json
+  CephMdsKey:
+    description: The cephx key for the MDS service. Can be created
+                 with ceph-authtool --gen-print-key.
+    type: string
+    hidden: true
+
+resources:
+  CephBase:
+    type: ./ceph-base.yaml
+    properties:
+      ServiceNetMap: {get_param: ServiceNetMap}
+      DefaultPasswords: {get_param: DefaultPasswords}
+      EndpointMap: {get_param: EndpointMap}
+
+outputs:
+  role_data:
+    description: Role data for the Ceph MDS service.
+    value:
+      service_name: ceph_mds
+      config_settings:
+        map_merge:
+          - get_attr: [CephBase, role_data, config_settings]
+          - ceph::profile::params::mds_key: {get_param: CephMdsKey}
+            tripleo.ceph_mds.firewall_rules:
+              '112 ceph_mds':
+                dport:
+                  - '6800-7300'
+      step_config: |
+        include ::tripleo::profile::base::ceph::mds

roles_data.yaml

@@ -25,6 +25,7 @@
   CountDefault: 1
   ServicesDefault:
     - OS::TripleO::Services::CACerts
+    - OS::TripleO::Services::CephMds
     - OS::TripleO::Services::CephMon
     - OS::TripleO::Services::CephExternal
     - OS::TripleO::Services::CephRgw