Fix DCN system upgrade failure to set ceph noout

In case of DCN setup with multiple stacks, the ceph task
"Set noout flag" is delegated to incorrect host and the
ceph command also fails to find  the conf and keyring.

This patch will ensure to
  - delegate the task to right host
  - run the ceph command for the specific cluster by
    using the correct conf and keyring files

Change-Id: Ib79b6bf3fb61a782661beaaeec85a2610c0f3833

deployment/cephadm/ceph-osd.yaml

@@ -37,6 +37,15 @@ parameters:
       devices: []
       osd_scenario: lvm
       osd_objectstore: bluestore
+  CephClusterName:
+    type: string
+    default: ceph
+    description: The Ceph cluster name.
+    constraints:
+    - allowed_pattern: "[a-zA-Z0-9]+"
+      description: >
+        The Ceph cluster name must be at least 1 character and contain only
+        letters and numbers.
   CephEnableDashboard:
     type: boolean
     default: false
@@ -107,7 +116,7 @@ outputs:
         list_concat:
         - {get_attr: [CephBase, role_data, upgrade_tasks]}
         - - name: Set noout flag
-            shell: "cephadm shell -- ceph osd set {{ item }}"
+            shell: "cephadm shell -c /etc/ceph/{{ tripleo_cephadm_cluster }}.conf -k /etc/ceph/{{ tripleo_cephadm_cluster }}.client.admin.keyring -- ceph osd set {{ item }}"
             become: true
             with_items:
               - noout
@@ -115,27 +124,31 @@ outputs:
               - nobackfill
               - norebalance
               - nodeep-scrub
-            delegate_to: "{{ ceph_mon_short_bootstrap_node_name }}"
+            delegate_to: "{{ groups['ceph_mon'][0] }}"
             tags:
               - never
               - system_upgrade
               - system_upgrade_prepare
+            vars:
+              tripleo_cephadm_cluster: {get_param: CephClusterName}
             when:
               - step|int == 1
               - upgrade_leapp_enabled
         - - name: Unset noout flag
-            shell: "cephadm shell -- ceph osd unset {{ item }}"
+            shell: "cephadm shell -c /etc/ceph/{{ tripleo_cephadm_cluster }}.conf -k /etc/ceph/{{ tripleo_cephadm_cluster }}.client.admin.keyring -- ceph osd unset {{ item }}"
             with_items:
               - noout
               - norecover
               - nobackfill
               - norebalance
               - nodeep-scrub
-            delegate_to: "{{ ceph_mon_short_bootstrap_node_name }}"
+            delegate_to: "{{ groups['ceph_mon'][0] }}"
             tags:
               - never
               - system_upgrade
               - system_upgrade_prepare
+            vars:
+              tripleo_cephadm_cluster: {get_param: CephClusterName}
             when:
               - step|int == 5
               - upgrade_leapp_enabled