Merge "Ensure that VMs are stopped before exiting the concurrent VM test" into main am: 8c4ec368da

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3141236

Change-Id: I2ee23f5e0efad3ce9cdc566c16e54d57f8509c77
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>