Description of problem:
Undefined variable in the backup procedure execution

Version-Release number of selected component (if applicable):
16.1 - core_puddle: RHOS-16.1-RHEL-8-20220917.n.0

How reproducible:
Executing the ReaR backup

Steps to Reproduce:
1.
2.
3.

Actual results:
0;31mTASK [backup-and-restore : MySQL BBDDs backup] *********************************
[0m
[0;31mfatal: [undercloud]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'tripleo_backup_and_restore_mysql_backup_file' is undefined\n\nThe error appears to be in '/usr/share/ansible/roles/backup-and-restore/backup/tasks/db_backup.yml': line 124, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: MySQL BBDDs backup\n  ^ here\n"}

Expected results:
Step is executed without errors

Additional info: