Fixes #26017 - Skip qpidd under load

[upadhyeammit]

The foreman-maintain already had logic to try taking config file backup 3 times. With this PR,

1. We try the to collect backup 2 times with qpidd data. Here 10 seconds delay between each run.
2. If backup fails then we skip qpidd data in third run,

WARNING: Attempt 1/3 to collect all config files failed!
Some files were modified during creation of the archive.
Waiting 10 seconds before re-try
/ Collecting config files to backup                                             
WARNING: Attempt 2/3 to collect all config files failed!
Some files were modified during creation of the archive.
Waiting 10 seconds before re-try
| Collecting config files to backup                                             
WARNING: Attempt 3/3 to collect all config files failed!
Some files were modified during creation of the archive.
- Collecting config files to backup, skipping /var/lib/qpidd                    
| Collecting config files to backup                                   [OK]      
~~

[theforeman-bot]

Issues: #26017

[upadhyeammit]

need to test this in two ways,

1. Collect online backup in regular way. Its expected that we collect the qpidd directory and restore it.
2. Collect the online backup while below command is running in extra terminal,

# while true; do  echo " " >> /var/lib/qpidd/test;done

Here we expect that qpidd directory is being skipped in backup. Also check restoration after backup to confirm there are no errors.

[vsedmik]

Tested the scenarios above on Sat 6.7 snap 13 (+patch and pulled Amit's branch) and seem to work well (/var/lib/qpidd/* collected and restored in case 1 and skipped after three retries in case 2), health check, UI and the content was ok after restore as well.
Tomorrow I'm going to test 'full stack' approach with some real load via hosts and hammer, stay tuned.

[kgaikwad]

As offline discussion, it would be good to have warning instead of spinner showing this information.

[kgaikwad]

Instead of passing configs and to_exclude to tar_command method, I think it would be good to have options to tar_command method which will accept extra directories to exclude and append to_exclude list inside tar_command?

[upadhyeammit]

I am closing this PR, shall be adding new PR for remaining work.