fix: avoid race condition for do-not-disrupt pods

[gnuletik]

Fixes #651, #1167

Description

Fork based on @wmgroot's work:
#651 (comment)

How was this change tested?

The fork is running in production for several weeks without issue.

[linux-foundation-easycla]

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• ✅ login: gnuletik / name: Martin Desrumaux (bd09f45)

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[gnuletik]

Duplicated of #1180