Add skills PPLTool execution cluster setting

[zane-neo]

Description

Add skills PPLTool execution cluster setting

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

Version

List the OpenSearch version to which this PR applies, e.g. 2.14, 2.12--2.14, or all.

Frontend features

If you're submitting documentation for an OpenSearch Dashboards feature, add a video that shows how a user will interact with the UI step by step. A voiceover is optional.

Checklist

• [ ] By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and subject to the Developers Certificate of Origin. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

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[hdhalter]

@zane-neo - Is this new for 2.16 or something that was missed before?

[zane-neo]

@zane-neo - Is this new for 2.16 or something that was missed before?

This is for 2.16.

[zane-neo]

Please hold on the merge, confirming if this PR is necessary.

[zane-neo]

This is not necessary since the cluster setting code has been reverted: https://github.com/opensearch-project/skills/pull/381, closing it now.