Camera VTS: Properly initialize Stream in various places am: 263e3620 am: 45063e6c

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



Change-Id: I92d9b6cbe953b288f8442f9d6bebbf6a9c2d6b4d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>