feat: Add minValues flexibility to the NodePool requirement.

[nikmohan123]

Description
This PR adds minValues flexibility to the NodePool requirement. The new NodePool requirement will be represented as:

type NodeSelectorRequirementWithMinValues struct {
	v1.NodeSelectorRequirement `json:",inline"`
	// MinValues is the minimum number of unique values required to define the flexibility of the specific requirement.
	// +kubebuilder:validation:Minimum:=1
	// +kubebuilder:validation:Maximum:=100
	// +optional
	MinValues *int `json:"minValues,omitempty"`
}

minValues represents the minimum number of unique values that needs to be considered for a particular requirement. So, this value ensures that the scheduler creates NodeClaims meeting this new requirement.

This PR has a dependency on another PR (Karpenter-sigs) that I am going to send out shortly (Update: Here is the PR: https://github.com/nikmohan123/karpenter/pull/1/files). Most of the changes in this PR is about changing the requirement struct to a new one that has flexibility of minValues in it. The main changes are related to lifting the restrictions/truncation logic that we have for the list of InstanceTypes that we send today to CreateFleet and also bypassing the logic that filters the expensive instanceTypes. This is to ensure that the minValues flexibility of the requirement is not compromised.

More details in: kubernetes-sigs/karpenter#966

How was this change tested?
Functional tests added.
Manually tested as well.

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• [] No

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

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[jonathan-innis]

Just some nits. LGTM 🚀

[jonathan-innis]

LGTM 🚀

[coveralls]

Pull Request Test Coverage Report for Build 7997021303

Details

• -2 of 66 (96.97%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.595%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/fake/utils.go	54	56	96.43%

Totals
Change from base Build 7996483757:	0.08%
Covered Lines:	5054
Relevant Lines:	6119

---

💛 - Coveralls

[jonathan-innis]

LGTM 🚀

[jonathan-innis]

/karpenter snapshot

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:v0-5c062a4220db6714735b7364a39d0418853f7db0.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

[jonathan-innis]

/karpenter snapshot

[jonathan-innis]

LGTM 🚀