Implement isAospDomainSelectionService of ITelephony

EmergencyCallDomainSelectionTestOnMockModem is a test
for AOSP domain selection service.

It determines whether the AOSP domain selection
service is running or not with this API.

Bug: 333893700
Test: atest EmergencyCallDomainSelectionTestOnMockModem
Change-Id: I540e0bc0ae279b378dc7782f77db522c97b564aa
1 file changed