[release-1.5] Remove strict check in scorer plugins and respect maxskew, requeue when no pods available rather than fail Scheduler

[knative-prow-robot]

This is an automated cherry-pick of #6524

Remove strict check in scorer plugins and respect max skew parameter. Requeue request when no pods available rather than fail scheduler.

[aavarghese]

/lgtm

[codecov]

Codecov Report

Base: 82.03% // Head: 82.01% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (8d5c6ad) compared to base (9171ccb).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-1.5    #6526      +/-   ##
===============================================
- Coverage        82.03%   82.01%   -0.02%     
===============================================
  Files              235      235              
  Lines            11713    11706       -7     
===============================================
- Hits              9609     9601       -8     
- Misses            1634     1636       +2     
+ Partials           470      469       -1     

Impacted Files	Coverage Δ
...labilitynodepriority/availability_node_priority.go	81.39% <ø> (+11.18%)	⬆️
...labilityzonepriority/availability_zone_priority.go	82.60% <ø> (+11.18%)	⬆️
pkg/scheduler/scheduler.go	100.00% <ø> (ø)
pkg/scheduler/statefulset/scheduler.go	79.13% <100.00%> (-2.80%)	⬇️

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[aavarghese]

/cc @pierDipi
I don't have approval powers :)

[pierDipi]

/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aavarghese, knative-prow-robot, pierDipi

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