Only check metadata for AIDL ManifestHals am: 42915f5979

Original change: https://android-review.googlesource.com/c/platform/system/libvintf/+/2862665

Change-Id: I691e95d0ce9f890cbf9f1cd5e3feb8e4cbb4b72f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>