34e9c6fa5d
Automatic merge from submit-queue (batch tested with PRs 50119, 48366, 47181, 41611, 49547) Move remaining cert helper functions from pkg/serviceaccount to client-go/util/cert **What this PR does / why we need it**: Unifies all remaining certificate helper functions from pkh/serviceaccount to client-go/util/cert. Private key functions were moved in #40907 **Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #40807 **Special notes for your reviewer**: **Release note**:
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