feat: Failover Support for Physical Restore

[tanmoysrt]

Fixes #2471

If normal physical restoration failed for any reason,
We will spin up a new mariadb container with the backup volume mounted.

Then, we will try to dump and import the logical backup in live database.

Required Tools-

• fio and docker on db server
• Docker image to perform the restoration (source code). Once ready, will move to this repo.

Agent PR - frappe/agent#166

Flow -

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.88%. Comparing base (d4bb4a0) to head (1e8914c).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2473      +/-   ##
==========================================
- Coverage   36.90%   36.88%   -0.02%     
==========================================
  Files         403      403              
  Lines       32073    32073              
==========================================
- Hits        11835    11831       -4     
- Misses      20238    20242       +4     

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