Verify Permissions for Telephony SDK28 Tests

Some flakiness in testing is resulting in security
exceptions. Test that permissions are properly granted
before running this test and flag failures within the
app to hopefully generate better debugging info in the
case of a failure.

Bug: 141221651
Test: atest AndroidTelephonySdk28TestCases
Change-Id: I9220a55f2a22753a4489d794bdd2a669f9e21000
1 file changed