Move database creation into role (keystone)

There is no record for why we implement the database creation outside
of the role in the playbook, when we could do it inside the role.

Implementing it inside the role allows us to reduce the quantity of
group_vars duplicated from the role, and allows us to better document
the required variables in the role. The delegation can still be done
as it is done in the playbook too.

In this patch we remove the test-vars which were duplicated from the
role, and remove the DB setup tasks as they are no longer required.

Change-Id: I2d313410fa79184f77e6f8331e27cacc498878ba
Depends-On: https://review.openstack.org/571774

test-install-keystone.yml

@@ -19,6 +19,8 @@
   any_errors_fatal: true
   user: root
   become: true
+  vars_files:
+    - test-vars.yml
   tasks:
     - name: Set keystone_messaging fact
       set_fact:
@@ -44,12 +46,6 @@
         - "'oslomsg_rpc_all' in groups"
         - "groups['oslomsg_rpc_all'] | length > 0"
 
-    - include: create-grant-db.yml
-      db_name: "{{ keystone_galera_database }}"
-      db_password: "{{ keystone_container_mysql_password }}"
-  vars_files:
-    - test-vars.yml
-
 - name: Playbook for deploying keystone
   hosts: keystone_all
   serial: 1
@@ -57,6 +53,8 @@
   become: true
   gather_facts: true
   any_errors_fatal: true
+  vars_files:
+    - test-vars.yml
   pre_tasks:
     # In order to ensure that any container, software or
     # config file changes which causes a container/service
@@ -78,8 +76,6 @@
         haproxy_state: enabled
       when:
         - "groups['keystone_all'] | length > 1"
-  vars_files:
-    - test-vars.yml
 
 - name: Playbook for finalising the keystone db migrations
   hosts: keystone_all[0]
@@ -87,6 +83,8 @@
   become: true
   gather_facts: false
   any_errors_fatal: true
+  vars_files:
+    - test-vars.yml
   tasks:
     - name: Perform a Keystone DB sync contract
       command: keystone-manage db_sync --contract
@@ -96,5 +94,3 @@
         PATH: "/openstack/venvs/keystone-{{ keystone_venv_tag }}/bin:{{ ansible_env.PATH }}"
       tags:
         - skip_ansible_lint
-  vars_files:
-    - test-vars.yml

test-vars.yml

@@ -149,8 +149,6 @@ keystone_rabbitmq_servers: "{{ rabbitmq_servers }}"
 keystone_rabbitmq_use_ssl: "{{ rabbitmq_use_ssl }}"
 keystone_rabbitmq_userid: keystone
 keystone_rabbitmq_vhost: /keystone
-keystone_galera_database: keystone
-keystone_galera_address: "{{ test_galera_host }}"
 keystone_container_mysql_password: "SuperSecrete"
 keystone_venv_tag: "testing"
 keystone_developer_mode: true