Allow vendor_init to do cgroup migration am: c954e7c50b am: 9220f661fd am: f251144afc

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/pixel-sepolicy/+/15105325

Change-Id: If7efc315569a80d02c988c911349b0928e657f1f