Fix issue where verstat is not propagated to Telecom.

The VERSTAT was not being passed along from the ImsService up through
to Telecom.

Test: Modify telephony stack to pass positive verification status; verify
through logs that Telecom has correct status.
Test: Wrote new unit tests to verify passing of verstat through the
Telephony stack.
Fixes: 152217000

Change-Id: Idf788c9862fca29f0a7ea02da832bb44a39e7d76