Run start and stop in a worker thread am: 855dee1102

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3545981

Change-Id: If87f1c540ecc8b292b1f51a4d167c1edbcb5bd87
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>