Merge "Added unit tests for SubscriptionManagerService" into udc-dev am: 816e6132

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/21503657



Change-Id: I495a723229460791857e278fc682a3f3ba819b42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>