cherry-pick least-nodes expander from #6792 into 1.27

[com6056]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Cherry-picks #6792 into the 1.27 release.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Added a new `least-nodes` expander

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

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[k8s-ci-robot]

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[Shubham82]

@com6056, we only support the patch release of the last three versions (i.e. 1.28 - 1.30). I just wonder if it merged then we can't get the patch release for CA 1.27.

For more info see #7016 for the last Patch release of CA.

[Shubham82]

cc @x13n
PTAL!

[com6056]

@com6056, we only support the patch release of the last three versions (i.e. 1.28 - 1.30). I just wonder if it merged then we can't get the patch release for CA 1.27.

For more info see #7016 for the last Patch release of CA.

Ah my bad, I forgot 1.27 wasn't getting anymore releases, I can go ahead and close this out then!

[Shubham82]

Thanks! @com6056