WIP: feat: Add random shuffles in multi-node consolidation

[mikebryant]

Fixes #2434

Description

The current algorithm doesn't deal well with:

• Multiple mutually exclusive NodePools
• Nodes spread across AZs with topologySpreadConstraints
  as it orders the Nodes, and then all consolidations must be of a consecutive sequence.

This preserves the existing behaviour as a default, but then can optionally shuffle the order in order to attempt to find other consolidation opportunities.

How was this change tested?

I've been using karpenter-provider-aws per the docs with the karpenter dependency replaced locally.

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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