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/755484
Change-Id: Ic1e031510391795e0971a7fbcdfe79dc939c9bec

defaults/main.yml

@@ -52,12 +52,14 @@ panko_system_comment: panko system user
 panko_system_user_home: "/var/lib/{{ panko_system_user_name }}"
 
 ## DB info
-panko_db_setup_host: "{{ ('galera_all' in groups) | ternary(groups['galera_all'][0], 'localhost') }}"
+panko_db_setup_host: "{{ openstack_db_setup_host | default('localhost') }}"
+panko_db_setup_python_interpreter: "{{ openstack_db_setup_python_interpreter | default((panko_db_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}"
 panko_database_name: panko
 panko_database_user: panko
 panko_db_type: "mysql+pymysql"
 panko_db_address: "{{ galera_address | default('127.0.0.1') }}"
 panko_connection_string: "{{ panko_db_type }}://{{ panko_database_user }}:{{ panko_container_db_password }}@{{ panko_db_address }}/{{ panko_database_name }}?charset=utf8"
+panko_galera_port: 3306
 
 
 ## uWSGI setup

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

@@ -37,6 +37,9 @@
     - inventory_hostname == groups['panko_all'][0]
   vars:
     _oslodb_setup_host: "{{ panko_db_setup_host }}"
+    _oslodb_ansible_python_interpreter: "{{ panko_db_setup_python_interpreter }}"
+    _oslodb_setup_endpoint: "{{ panko_db_address }}"
+    _oslodb_setup_port: "{{ panko_galera_port }}"
     _oslodb_databases:
       - name: "{{ panko_database_name }}"
         users: