Undercloud mysql database must be idempotent

Currently, the database backup excludes certain tables because it is
intended do a restorable dump of a Galera cluster, but this does not
apply onm the undercloud database, which does not belong to any cluster.

This patch changes the procedure for taking an undercloud database
backup to get a full one.

Change-Id: I5e2876b3f7ffe2b63584802505a10dd1966be4a0
(cherry picked from commit 7884d62ae8)

tripleo_ansible/roles/backup_and_restore/tasks/db_backup.yml

@@ -121,7 +121,18 @@
     - bar_create_recover_image
   no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
 
-- name: MySQL Grants backup
+- name: MySQL BBDDs backup
+  shell: |
+    set -o pipefail
+    {{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysqldump -uroot -p{{ mysql_password.stdout }} --opt --all-databases" > {{ tripleo_backup_and_restore_mysql_backup_file }}
+  when:
+    - mysql_password.stderr is defined
+    - not enabled_galera
+  tags:
+    - bar_create_recover_image
+  no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
+
+- name: Galera Grants backup
   shell: |
     set -o pipefail
     {{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -uroot \
@@ -130,12 +141,14 @@
     FROM mysql.user where (length(user) > 0 and \
     (Host = 'localhost' or Host='%' or IS_IPV4(Host) or IS_IPV6(Host)))\"  | xargs -n1 mysql \
     -uroot -p{{ mysql_password.stdout }} -s -N -e | sed 's/$/;/' " > {{ tripleo_backup_and_restore_mysql_grants_file }}
-  when: mysql_password.stderr is defined
+  when:
+    - mysql_password.stderr is defined
+    - enabled_galera
   tags:
     - bar_create_recover_image
   no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
 
-- name: MySQL BBDDs backup
+- name: Galera BBDDs backup
   shell: |
     set -o pipefail
     {{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -uroot \
@@ -143,7 +156,9 @@
     -e \"select distinct table_schema from information_schema.tables \
     where engine='innodb' and table_schema != 'mysql';\" | xargs mysqldump -uroot \
     -p{{ mysql_password.stdout }}  --single-transaction --databases" > {{ tripleo_backup_and_restore_mysql_backup_file }}
-  when: mysql_password.stderr is defined
+  when:
+    - mysql_password.stderr is defined
+    - enabled_galera
   tags:
     - bar_create_recover_image
   no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"