Added service state override testing tool

Expand Telephony tester to support service state
override to simulate hard-to-repro issues.

Test: Manual
Merged-In: I1525c18322dd8282c1ee2c7f9b5f030b0a9c9543
Change-Id: I1525c18322dd8282c1ee2c7f9b5f030b0a9c9543