Added Extension for MaaS integration in CloudStack

[harikrishna-patnala]

Description

This PR adds a new extension and script to support MaaS (https://canonical.com/maas) in CloudStack.

Doc PR : apache/cloudstack-documentation#561

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)
• 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
• 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?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 17.39%. Comparing base (8089d32) to head (e551ba1).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #11613      +/-   ##
============================================
+ Coverage     17.36%   17.39%   +0.03%     
- Complexity    15245    15281      +36     
============================================
  Files          5888     5888              
  Lines        525831   526130     +299     
  Branches      64183    64232      +49     
============================================
+ Hits          91298    91532     +234     
- Misses       424227   424265      +38     
- Partials      10306    10333      +27     

Flag	Coverage Δ
uitests	3.62% <ø> (-0.01%)	⬇️
unittests	18.44% <ø> (+0.04%)	⬆️

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[harikrishna-patnala]

@blueorangutan package

[blueorangutan]

@harikrishna-patnala 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.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 14951