adding optional support for topologySpreadConstraints to helm chart

[stensonb]

Issue

#2563

(replacement for #2571 )

Description

This adds optional (defaulting to empty) topologySpreadConstraints to the helm chart.

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[k8s-ci-robot]

Hi @stensonb. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[codecov-commenter]

Codecov Report

Merging #2575 (34d5ffb) into main (f014735) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2575   +/-   ##
=======================================
  Coverage   53.85%   53.85%           
=======================================
  Files         144      144           
  Lines        8165     8165           
=======================================
  Hits         4397     4397           
  Misses       3451     3451           
  Partials      317      317           

---

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[kishorj]

Please update the README.md with the new configuration parameter

[kishorj]

/ok-to-test

[BryanStenson-okta]

/retest

[kishorj]

appears due to recent changes in #2517. I will investigate further.

[kishorj]

please rebase after PR 2577 gets merged

[kishorj]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kishorj, stensonb

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