Allow modification of ro.telephony.default_network Unfortunately the type of ro.telephony.default_network was changed in b/110626665 after finalizing Android P. So modification of ro.telephony.default_network should be allowed. Bug: 110626665 Test: run vts -m VtsTrebleSysProp Merged-In: I82bc5d931197684be9f5ca623a55f42cbdc1fd84 Change-Id: Ib22bbc027da956ffb3a01a7a967cb4b8f3d9cb3e