migrate roaming operator configs to carrierconfig

Bug:37885668
Test:runtest --path
packages/apps/CarrierConfig/tests/src/com/android/carrierconfig/CarrierConfigTest.java

Change-Id: Ic837fe773bcd7fb53afbe7074fc9da5ae9c88b20
Merged-In: Ic837fe773bcd7fb53afbe7074fc9da5ae9c88b20
2 files changed