Allow CDD required properties to be absent in VTS. am: da7a4ddabd am: 7473a3f18f am: b09be6916d

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

Change-Id: Ia5ea678a7d0702a56155edb552b1df2207d0e847
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>