[release-1.30] Add flag to enable fast delete of failed VMSS #7408
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What type of PR is this?
/kind cleanup
What this PR does / why we need it:
"Refactor" as a part of fork-upstream realignment. Fork introduces an environment variable
AZURE_ENABLE_FAST_DELETE_ON_FAILED_PROVISIONING
to enable fast delete of failed VMSS, whereas upstream does this by default.Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Does this PR introduce a user-facing change?
Question: should this be enabled by default to preserve current behavior upstream?