Merge "Create TestApi for simulating a Data Stall on ConnectivityService." into rvc-dev am: 8ed33c51f1

Change-Id: I126dd23216a3a42a9745a2c97e26ac2599e307e1
tree: af8d8eb1d7a219090aa1da2c6aba911699c52fe7
  1. core/
  2. services/
  3. tests/