Add SkipUpgradeConfigTags for upgrade config

It may be that we want ways to selectively disable certain tasks,
such as pre-flight validations that might fail when restarting an
upgrade from a failed state.  This shows a way we might do that.

Depends-On: I18214f80be9f3ad6c2d385fc00f3b786d3e7dda3
Change-Id: Ibffaaf1de0baf47a0450daa5b7cbb57d38746556

puppet/services/cinder-api.yaml

@@ -149,6 +149,9 @@ outputs:
       metadata_settings:
         get_attr: [ApacheServiceBase, role_data, metadata_settings]
       upgrade_tasks:
+        - name: "PreUpgrade step0: Check service openstack-cinder-api is running"
+          shell: /usr/bin/systemctl show 'openstack-cinder-api' --property ActiveState | grep '\bactive\b'
+          tags: step0,validation
         - name: check for cinder running under apache (post upgrade)
           tags: step2
           shell: "apachectl -t -D DUMP_VHOSTS | grep -q cinder"

puppet/upgrade_config.yaml

@@ -11,6 +11,11 @@ parameters:
     type: string
     description: Step number of the upgrade
 
+  SkipUpgradeConfigTags:
+    type: comma_delimited_list
+    description: Ansible tags to skip during upgrade, e.g validation skips pre-upgrade validations
+    default: []
+
 resources:
 
   AnsibleConfig:
@@ -30,6 +35,10 @@ resources:
     properties:
       group: ansible
       options:
+        skip_tags:
+          list_join:
+            - ","
+            - {get_param: SkipUpgradeConfigTags}
         tags:
           str_replace:
             template: "stepSTEP"