Better messages for Ferrochrome users am: 9210458245

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3140049

Change-Id: I4c1d33002d274df27584f31231fa6ba61f310bab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>