refactor: Proxy failover (backport #4039)

[mergify]

• test things on local
• figure out routing from primary to secondary (in case of non static ip) - will create a new pr for this

  ---

  This is an automatic backport of pull request refactor: Proxy failover #4039 done by Mergify.

[codecov]

Codecov Report

❌ Patch coverage is 39.28571% with 136 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.88%. Comparing base (06c7117) to head (d0e4aea).

Files with missing lines	Patch %	Lines
...ess/press/doctype/proxy_failover/proxy_failover.py	35.33%	97 Missing ⚠️
...s/press/doctype/virtual_machine/virtual_machine.py	41.46%	24 Missing ⚠️
...ess/doctype/auto_scale_record/auto_scale_record.py	42.85%	4 Missing ⚠️
press/press/doctype/proxy_server/proxy_server.py	40.00%	3 Missing ⚠️
press/runner.py	50.00%	3 Missing ⚠️
...ype/nfs_volume_attachment/nfs_volume_attachment.py	0.00%	2 Missing ⚠️
...ype/nfs_volume_detachment/nfs_volume_detachment.py	0.00%	2 Missing ⚠️
press/press/doctype/server/server.py	0.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (39.28%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4080      +/-   ##
==========================================
+ Coverage   44.82%   44.88%   +0.05%     
==========================================
  Files         723      726       +3     
  Lines       49574    49716     +142     
==========================================
+ Hits        22222    22315      +93     
- Misses      27352    27401      +49     

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