Test for global approvals introduced in http://9315657.

The change is in frameworks/opt/telephony. Only specific groups can +2, and neither narayan@ nor hansson@ are owners.

I should be able to submit this with Code-Review +2 and Global-Approval +1 from narayan@.

For additional testing, the rollback will be submited with Buildcop override.

Bug: 138919074
Test: N/A
Change-Id: I1d9f4a299ca7b2e15d2171dbc0dfc39bf760d0be