Gen. anamoly report when Telecom & Telephony default out are diff

To better understand what series of events are causing telecoms and
telephonys default outgoing accounts to get out of sync, an anamoly
report should be generated whenver this happens.

bug: 277989583
Test: existing unit tests + CTS
Change-Id: If7e6eab3c20f02e17b190d60b7f21e250c62c243