Check backup server IP failed when environments/backup-and-restore/rear.yaml

https://bugzilla.redhat.com/show_bug.cgi?id=2097611

Description of problem:
Openstack overcloud deploy command fails when ReaR environment file is included.

Version-Release number of selected component (if applicable):
Openstack wallaby

How reproducible:
add the environment file '/usr/share/openstack-tripleo-heat-templates/environments/backup-and-restore/rear.yaml' in openstack overcloud deploy command.

Steps to Reproduce:
1. Add /usr/share/openstack-tripleo-heat-templates/environments/backup-and-restore/rear.yaml as a environment file in openstack overcloud deploy command
2. Run the deployement, in step 0 or 1 the error should come up.

Actual results:

2022-06-16 14:52:07.581055 | 48d539a1-1679-6c30-81d1-000000007f7d | TASK | Check backup server IP
2022-06-16 14:52:18.186942 | 48d539a1-1679-6c30-81d1-000000007f7d | FATAL | Check backup server IP | overcloud-controller-1 | error={"changed": true, "cmd": ["ping", "-c", "1", "192.168.24.1"], "delta": "0:00:10.011643", "end": "2022-06-16 06:52:18.119615", "msg": "non-zero return code", "rc": 1, "start": "2022-06-16 06:52:08.107972", "stderr": "", "stderr_lines": [], "stdout": "PING 192.168.24.1 (192.168.24.1) 56(84) bytes of data.\n\n--- 192.168.24.1 ping statistics ---\n1 packets transmitted, 0 received, 100% packet loss, time 0ms", "stdout_lines": ["PING 192.168.24.1 (192.168.24.1) 56(84) bytes of data.", "", "--- 192.168.24.1 ping statistics ---", "1 packets transmitted, 0 received, 100% packet loss, time 0ms"]}

Expected results:
ReaR in tripleo should be deployed without errors

Additional info:

There is no 192.168.24.0 subnet in my setup