Add additional_labels parameter (#1160)

* Move label templates into `common` role

So that there is single source of labels management, and labels are
unified across the other roles

* Introduce `additional_labels`
* Fix paths for labels templates
* Return `additional_labels_items` as list
* Add molecule tests

config/crd/bases/awx.ansible.com_awxbackups.yaml

@@ -94,6 +94,11 @@ spec:
                 description: Configure no_log for no_log tasks
                 type: boolean
                 default: true
+              additional_labels:
+                description: Additional labels defined on the resource, which should be propagated to child resources
+                type: array
+                items:
+                  type: string
               set_self_labels:
                 description: Maintain some of the recommended `app.kubernetes.io/*` labels on the resource (self)
                 type: boolean

config/crd/bases/awx.ansible.com_awxrestores.yaml

@@ -96,6 +96,11 @@ spec:
                 description: Configure no_log for no_log tasks
                 type: boolean
                 default: true
+              additional_labels:
+                description: Additional labels defined on the resource, which should be propagated to child resources
+                type: array
+                items:
+                  type: string
               set_self_labels:
                 description: Maintain some of the recommended `app.kubernetes.io/*` labels on the resource (self)
                 type: boolean

config/crd/bases/awx.ansible.com_awxs.yaml

@@ -890,6 +890,11 @@ spec:
                 description: Maintain some of the recommended `app.kubernetes.io/*` labels on the resource (self)
                 type: boolean
                 default: true
+              additional_labels:
+                description: Additional labels defined on the resource, which should be propagated to child resources
+                type: array
+                items:
+                  type: string
               ipv6_disabled:
                 description: Disable web container's nginx ipv6 listener
                 type: boolean

config/manifests/bases/awx-operator.clusterserviceversion.yaml

@@ -707,6 +707,12 @@ spec:
         x-descriptors:
         - urn:alm:descriptor:com.tectonic.ui:advanced
         - urn:alm:descriptor:com.tectonic.ui:booleanSwitch
+      - displayName: Additional labels defined on the resource, which should be
+          propagated to child resources
+        path: additional_labels
+        x-descriptors:
+        - urn:alm:descriptor:com.tectonic.ui:advanced
+        - urn:alm:descriptor:com.tectonic.ui:hidden
       - displayName: Disable IPv6 listener?
         path: ipv6_disabled
         x-descriptors: