Merge "Add mock modem service operations in Telephony" am: a7ab25609e am: 2daf9fed80 am: f7d2720095

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1926901

Change-Id: Ib369b070d0f427c48b6cdbf5f61a6328642f889a