Migrated unit test to the new subscription manager am: 6931c9eb am: 2d083bf5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/21478145



Change-Id: I5dda5c9733051582fc1d94253523bec88e7f8976
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>