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

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

Change-Id: I0ca718c6021ea96ad17a4a2913e68541c57bed40
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>