Camera VTS: Properly initialize Stream in various places am: 263e362091 am: 45063e6c9f am: 65e8d93a07

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/23850975

Change-Id: I1198846b0e677951c8ee4b85a1d98a1ee0a0ba93
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>