Make the NetworkSpecifier a class instead of a string.

Bug: 27533960
Bug: 36053921
Bug: 36275276
Test: connectivity, wifi, telephony unit tests
Change-Id: Idd9b10a8418c53c8cf386d9ff8252226b076bbf9
4 files changed
tree: 2e26e1148a20899c7468f39d0325f384bf7ad77e
  1. core/
  2. services/
  3. tests/