Use the utility host for db setup tasks

Move it to the service setup host (defaults to utility[0]) instead
of the galera[0] host, and use galera_address (defaults to internal VIP)
as the endpoint instead of a local connection on the db host.

Depends-On: https://review.opendev.org/744453
Depends-On: https://review.opendev.org/744881
Change-Id: Ie52799cc2129b6e36b99ee65b237bb04a8edf18f

defaults/main.yml

@@ -98,7 +98,8 @@ keystone_resource_driver: sql
 keystone_bind_address: "{{ openstack_service_bind_address | default('0.0.0.0') }}"
 
 ## Database info
-keystone_db_setup_host: "{{ ('galera_all' in groups) | ternary(groups['galera_all'][0], 'localhost') }}"
+keystone_db_setup_host: "{{ openstack_db_setup_host | default('localhost') }}"
+keystone_db_setup_python_interpreter: "{{ openstack_db_setup_python_interpreter | default((keystone_db_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}"
 keystone_galera_address: "{{ galera_address | default('127.0.0.1') }}"
 keystone_galera_user: keystone
 keystone_galera_database: keystone

tasks/db_setup.yml

@@ -22,12 +22,16 @@
 
 - name: Setup Database Service (MariaDB)
   delegate_to: "{{ _oslodb_setup_host }}"
+  vars:
+    ansible_python_interpreter: "{{ _oslodb_ansible_python_interpreter }}"
   tags:
     - common-mariadb
   block:
     - name: Create database for service
       mysql_db:
         name: "{{ item.name }}"
+        login_host: "{{ _oslodb_setup_endpoint | default(omit) }}"
+        login_port: "{{ _oslodb_setup_port | default(omit) }}"
       loop: "{{ _oslodb_databases }}"
       no_log: true
 
@@ -38,5 +42,7 @@
         host: "{{ item.1.host | default('%') }}"
         priv: "{{ item.0.name }}.*:{{ item.1.priv | default('ALL') }}"
         append_privs: yes
+        login_host: "{{ _oslodb_setup_endpoint | default(omit) }}"
+        login_port: "{{ _oslodb_setup_port | default(omit) }}"
       loop: "{{ _oslodb_databases | subelements('users') }}"
       no_log: true

tasks/main.yml

@@ -69,6 +69,9 @@
     - "inventory_hostname == ((groups[keystone_services['keystone-wsgi-public']['group']] | intersect(ansible_play_hosts)) | list)[0]"
   vars:
     _oslodb_setup_host: "{{ keystone_db_setup_host }}"
+    _oslodb_ansible_python_interpreter: "{{ keystone_db_setup_python_interpreter }}"
+    _oslodb_setup_endpoint: "{{ keystone_galera_address }}"
+    _oslodb_setup_port: "{{ keystone_galera_port }}"
     _oslodb_databases:
       - name: "{{ keystone_galera_database }}"
         users: