Improved way of detecting Galera cluster is up&running

There is a script in every node that checks correctly if the
Galera node has been correctly re-introduced in the cluster
as the previous check on the local port open had some
disadvantages, and does not wait for IST to complete.

This is an unclean cherry-pick because backup_and_restore in train
is called backup-and-restore. No extra changes implemented.

Change-Id: Id49274f5bade4af5b88b6354cfa092e4b041eb6e
(cherry picked from commit dc4e574ba1)
(cherry picked from commit 79f92e70ad)

tripleo_ansible/roles/backup-and-restore/backup/tasks/db_backup.yml

@@ -65,13 +65,7 @@
     - bar_create_recover_image
 
 - name: Wait until pacemaker has Galera up&running
-  shell: |
-    set -o pipefail
-    ss -tunlp | grep ":3306 " | sed -e 's/.*\///'
-  register: mysql_result
-  retries: 300
-  until: mysql_result is search('mysqld')
-  delay: 5
+  shell: /var/lib/container-config-scripts/pacemaker_wait_bundle.sh galera galera-bundle Master
   when:
     - enabled_galera
   tags:

tripleo_ansible/roles/backup-and-restore/backup/tasks/pacemaker_start.yml

@@ -21,13 +21,6 @@
     - bar_create_recover_image
 
 - name: Wait until pacemaker has Galera up&running
-  shell: |
-    set -o pipefail
-    ss -tunlp | grep ":3306 " | sed -e 's/.*\///'
-  register: mysql_result
-  retries: 300
-  until: mysql_result is search('mysqld')
-  delay: 5
-  when: tripleo_backup_and_restore_enabled_services.stdout is search('mysql^')
+  shell: /var/lib/container-config-scripts/pacemaker_wait_bundle.sh galera galera-bundle Master
   tags:
     - bar_create_recover_image