Increase the number of CPU nodes in the Pathways CPU nodepool.

[RoshaniN]

Fixes / Features

This feature only affects Pathways enabled clusters.

• Workloads are bottlenecked by the number of CPU nodes on clusters with Pathways enabled.
• Increasing the default number of CPU nodes to 4 (which was 1 previously).
• Making this change backward compatible by resizing the Pathways CPU nodepool, if the cluster is already Pathways enabled.

Testing / Documentation

Tested on a cluster with 19 v5litepod-32

• [ y/n ] Tests pass
• [ y/n ] Appropriate changes to documentation are included in the PR

[pawloch00]

@RoshaniN is this going to be merged?

[github-actions[bot]]

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