Support removing user role assignments

Change-Id: I5bb26d351218b8f8d9712d6a2a894b951826e96d

ansible/roles/service-ks-register/tasks/main.yml

@@ -100,7 +100,7 @@
       retries: "{{ service_ks_register_retries }}"
       delay: "{{ service_ks_register_delay }}"
 
-    - name: "{{ project_name }} | Granting user roles"
+    - name: "{{ project_name }} | Granting/revoking user roles"
       kolla_toolbox:
         container_engine: "{{ kolla_container_engine }}"
         module_name: openstack.cloud.role_assignment
@@ -114,6 +114,7 @@
           auth: "{{ service_ks_register_auth }}"
           interface: "{{ service_ks_register_interface }}"
           cacert: "{{ service_ks_cacert }}"
+          state: "{{ item.state | default('present') }}"
       with_items: "{{ service_ks_register_users + service_ks_register_user_roles }}"
       loop_control:
         label: "{{ item.user }} -> {{ item.project | default(item.domain) | default(item.system) }} -> {{ item.role }}"

releasenotes/notes/support-removing-user-role-assignments-97f5463a8a653158.yaml

@@ -0,0 +1,5 @@
+---
+other:
+  - |
+    User role assignments for services can now be removed by setting the option
+    ``state: absent``.