quick-provision: Clear default-key-stateful transition flag

Moblab-based provisioning flows are running into issues when
transitioning to default-key-stateful layouts. Allow the
devices to fall back to LVM layout.

BUG=b:409086963
TEST=provision_QuickProvision from M134 -> M136 -> M137 preserves
/usr/local

Change-Id: I097e7c696b4d5e43d8184a47dc29a3e01fb875df
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6442916
Reviewed-by: Jesse McGuire <jessemcguire@google.com>
Auto-Submit: Sarthak Kukreti <sarthakkukreti@google.com>
Commit-Queue: Sarthak Kukreti <sarthakkukreti@google.com>
Tested-by: Sarthak Kukreti <sarthakkukreti@google.com>
Commit-Queue: Jesse McGuire <jessemcguire@google.com>
1 file changed