Cleanup userconcentratedpod_random and userconcentratedpod_firstfit allocation algorithms

[sudo87]

Description

This PR cleans up following vm and volume allocation algorithms which are redundant and behave same as “random" and “firstfit”, without the "userconcentrated" :

1. userconcentratedpod_random
2. userconcentratedpod_firstfit

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)
• [x] 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[bot]]

Codecov Report

:x: Patch coverage is 8.33333% with 11 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 17.46%. Comparing base (cfe9602) to head (3bbbb26).

Files with missing lines	Patch %	Lines
...ava/com/cloud/upgrade/dao/Upgrade42210to42300.java	0.00%	7 Missing :warning:
...in/java/com/cloud/upgrade/dao/Upgrade410to420.java	0.00%	2 Missing :warning:
...torage/allocator/AbstractStoragePoolAllocator.java	0.00%	0 Missing and 1 partial :warning:
...gent/manager/allocator/impl/FirstFitAllocator.java	0.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #12233   +/-   ##
=========================================
  Coverage     17.45%   17.46%           
- Complexity    15513    15516    +3     
=========================================
  Files          5913     5913           
  Lines        529385   529392    +7     
  Branches      64679    64680    +1     
=========================================
+ Hits          92426    92448   +22     
+ Misses       426541   426525   -16     
- Partials      10418    10419    +1     

Flag	Coverage Δ
uitests	3.58% <ø> (ø)
unittests	18.52% <8.33%> (+<0.01%)	:arrow_up:

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[DaanHoogland]

I edtitted the description @sudo87, hope you like my version. looks good other wise but needs testing to make sure it is complete.

[rajujith]

@blueorangutan package

[blueorangutan]

@rajujith 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 16051