[WIP] Configuration settings validation improvements

[sureshanaparti]

Description

This PR improves configuration settings validation and some code refactoring.

Types of changes

• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Enhancement (improves an existing feature and functionality)
• [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
• [ ] build/CI
• [ ] test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• [ ] Major
• [x] Minor

Bug Severity

• [ ] BLOCKER
• [ ] Critical
• [ ] Major
• [ ] Minor
• [ ] Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 41.02564% with 23 lines in your changes missing coverage. Please review.

Project coverage is 15.18%. Comparing base (0d5a0ea) to head (b7a23e2).

Files with missing lines	Patch %	Lines
.../cloud/configuration/ConfigurationManagerImpl.java	35.29%	20 Missing and 2 partials :warning:
...om/cloud/network/firewall/FirewallManagerImpl.java	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff            @@
##               4.19   #10998   +/-   ##
=========================================
  Coverage     15.18%   15.18%           
+ Complexity    11365    11364    -1     
=========================================
  Files          5416     5417    +1     
  Lines        475890   475906   +16     
  Branches      58093    58097    +4     
=========================================
+ Hits          72254    72260    +6     
- Misses       395550   395560   +10     
  Partials       8086     8086           

Flag	Coverage Δ
uitests	4.28% <ø> (ø)
unittests	15.91% <41.02%> (+<0.01%)	:arrow_up:

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13689