Allow CDD required properties to be absent in VTS. am: da7a4ddabd am: 7473a3f18f

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2779276

Change-Id: Iee78a6e63691cf4d7b564a340db23a904feef93e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>