Change type of CephAnsiblePlaybook from string to comma_delimited_list

Enables users to run more than one CephAnsiblePlaybook during deployment
if desired. Change is backwards compatible in case string is passed.

Depends-On: I70786ab7b81f9985ddf1148b14ef803c327752b9
Change-Id: Ie0e6e53ed08a22b1453ab1230c7c6d46104716fa

docker/services/ceph-ansible/ceph-base.yaml

@@ -50,9 +50,9 @@ parameters:
     description: Name of the Mistral workflow to execute
     default: tripleo.storage.v1.ceph-install
   CephAnsiblePlaybook:
-    type: string
-    description: Path to the ceph-ansible playbook to execute
-    default: /usr/share/ceph-ansible/site-docker.yml.sample
+    type: comma_delimited_list
+    description: List of paths to the ceph-ansible playbooks to execute
+    default: ['/usr/share/ceph-ansible/site-docker.yml.sample']
   CephAnsibleUpgradePlaybook:
     type: string
     description: Path to the ceph-ansible playbook to execute on upgrade

environments/ceph-ansible/ceph-ansible-external.yaml

@@ -2,7 +2,7 @@ resource_registry:
   OS::TripleO::Services::CephExternal: ../../docker/services/ceph-ansible/ceph-external.yaml
 
 parameter_defaults:
-  CephAnsiblePlaybook: /usr/share/ceph-ansible/site-docker.yml.sample
+  CephAnsiblePlaybook: ['/usr/share/ceph-ansible/site-docker.yml.sample']
   # NOTE: These example parameters are required when using CephExternal
   #CephClusterFSID: '4b5c8c0a-ff60-454b-a1b4-9747aa737d19'
   #CephClientKey: 'AQDLOh1VgEp6FRAAFzT7Zw+Y9V6JJExQAsRnRQ=='

environments/ceph-ansible/ceph-ansible.yaml

@@ -5,7 +5,7 @@ resource_registry:
   OS::TripleO::Services::CephClient: ../../docker/services/ceph-ansible/ceph-client.yaml
 
 parameter_defaults:
-  CephAnsiblePlaybook: /usr/share/ceph-ansible/site-docker.yml.sample
+  CephAnsiblePlaybook: ['/usr/share/ceph-ansible/site-docker.yml.sample']
   CinderEnableIscsiBackend: false
   CinderEnableRbdBackend: true
   CinderBackupBackend: ceph

environments/storage-environment.yaml

@@ -12,7 +12,7 @@ resource_registry:
   OS::TripleO::Services::CephClient: ../docker/services/ceph-ansible/ceph-client.yaml
 
 parameter_defaults:
-  CephAnsiblePlaybook: /usr/share/ceph-ansible/site-docker.yml.sample
+  CephAnsiblePlaybook: ['/usr/share/ceph-ansible/site-docker.yml.sample']
 
   #### BACKEND SELECTION ####