fix: ensure variable sub and processing is performed. Fixes #12941 (cherry-pick #14444)

[gcp-cherry-pick-bot]

Cherry-picked fix: ensure variable sub and processing is performed. Fixes #12941 (#14444)

Signed-off-by: isubasinghe isitha@pipekit.io

[isubasinghe]

@Joibel the kit installtion seems to be failing, do you know if this is expected on the release-3.5 branch?
Hmm I think this is the call to sudo

[Joibel]

@Joibel the kit installtion seems to be failing, do you know if this is expected on the release-3.5 branch? Hmm I think this is the call to sudo

This has changed on main, so perhaps cherry-picking Alex's change back is the right thing to do. There might be more than one update, I haven't looked.