octavia: Ensure service auth project exists

Kolla Ansible supports configuration of the project used by Octavia to
communicate with other services, via octavia_service_auth_project. Until
Ussuri, this was set to admin. In Ussuri it changed to service. It may
also be set to a different value.

Kolla Ansible currently gives the octavia user the admin role in the
project, but it does not ensure that the project exists. For admin and
service projects, this is not a problem. If the project has been
customised however, it will not necessarily exist, which will cause
Octavia deployment to fail.

This change fixes the issue by ensuring that the service auth project
exists, in addition to the service project.

Closes-Bug: #1922100
Change-Id: I968efbf3ad1de676548b4e3aeefc20bf80ca94a0

ansible/roles/octavia/defaults/main.yml

@@ -227,6 +227,13 @@ octavia_ks_users:
     user: "{{ octavia_keystone_user }}"
     password: "{{ octavia_keystone_password }}"
     role: "admin"
+  # NOTE(mgoddard): The default for the service auth project is service, but
+  # may be customised. Ensure the project exists, and assign the octavia user
+  # the admin role in it.
+  - project: "{{ octavia_service_auth_project }}"
+    user: "{{ octavia_keystone_user }}"
+    password: "{{ octavia_keystone_password }}"
+    role: "admin"
 
 ####################
 # Kolla

ansible/roles/octavia/tasks/register.yml

@@ -6,21 +6,6 @@
     service_ks_register_services: "{{ octavia_ks_services }}"
     service_ks_register_users: "{{ octavia_ks_users }}"
 
-- name: "Adding admin role to octavia user in {{ octavia_service_auth_project }} project"
-  become: true
-  kolla_toolbox:
-    module_name: "os_user_role"
-    module_args:
-      user: "{{ octavia_keystone_user }}"
-      role: admin
-      project: "{{ octavia_service_auth_project }}"
-      auth: "{{ openstack_octavia_auth }}"
-      endpoint_type: "{{ openstack_interface }}"
-      cacert: "{{ openstack_cacert }}"
-      region_name: "{{ openstack_region_name }}"
-  run_once: True
-  when: octavia_service_auth_project != 'service'
-
 - name: Adding octavia related roles
   become: true
   kolla_toolbox:

releasenotes/notes/octavia-create-service-auth-project-aa38b12ebb601777.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fixes an issue with Octavia deployment when using a custom service auth
+    project. If ``octavia_service_auth_project`` is set to a project that does
+    not exist, Octavia deployment would fail. The project is now created.
+    `LP#1922100 <https://bugs.launchpad.net/kolla-ansible/+bug/1922100>`__