[release-0.12] Plumbing validation error back to user

[eks-distro-pr-bot]

This is an automated cherry-pick of #3827

/assign maxdrib

[eks-distro-bot]

Hi @eks-distro-pr-bot. Thanks for your PR.

I'm waiting for a aws 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.

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-0.12@3e2a441). Click here to learn what that means.
The diff coverage is n/a.

@@               Coverage Diff               @@
##             release-0.12    #3832   +/-   ##
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  Coverage                ?   67.08%           
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  Files                   ?      369           
  Lines                   ?    30637           
  Branches                ?        0           
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  Hits                    ?    20552           
  Misses                  ?     8705           
  Partials                ?     1380           

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[TerryHowe]

/lgtm
/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: TerryHowe

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