Run KeyMint VM test only when the feature is enabled am: 34e9eddef3

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3482933

Change-Id: If6322a4e1e618649b49a28656cf4625576b56855
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>