RFC: Propose minValues to enforce Flexibility on NodeClaim Requests

[jonathan-innis]

Fixes #N/A

Description

This RFC proposes a change where users can pass through minValues into their different requirement block keys to ensure that Karpenter maintains their request minimum flexibility requirements as it is scheduling pods to nodes. This is useful to maintain spot flexibility when Karpenter is launching new nodes.

How was this change tested?

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[coveralls]

Pull Request Test Coverage Report for Build 7806548238

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• 0 of 0 changed or added relevant lines in 0 files are covered.
• 290 unchanged lines in 22 files lost coverage.
• Overall coverage increased (+0.2%) to 80.566%

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Files with Coverage Reduction	New Missed Lines	%
pkg/controllers/disruption/emptiness.go	1	97.83%
pkg/controllers/node/termination/terminator/terminator.go	1	94.03%
pkg/controllers/disruption/singlenodeconsolidation.go	2	83.05%
pkg/controllers/disruption/types.go	3	97.6%
pkg/controllers/nodeclaim/consistency/termination.go	3	83.33%
pkg/controllers/disruption/drift.go	4	93.75%
pkg/controllers/disruption/emptynodeconsolidation.go	4	89.55%
pkg/controllers/disruption/expiration.go	4	93.94%
pkg/controllers/disruption/pdblimits.go	4	89.29%
pkg/test/expectations/expectations.go	4	95.84%

Totals
Change from base Build 7658749655:	0.2%
Covered Lines:	7918
Relevant Lines:	9828

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💛 - Coveralls

[sftim]

My thoughts

[njtran]

Overall, good design, we've already synced on most of my thoughts in the doc, but just posting them here for posterity

[njtran]

/lgtm
/approve

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