Add test coverage for registerSystemDefaultNetworkCallback.

Bug: 173331190
Test: atest CtsNetTestCases:NetworkAgentTest
Change-Id: I3ce51ca253a8bd06408137f6f9ed4056a832cb43
2 files changed
tree: 0f81151fb3e482aa2c2b02ef10f779e1a86abdb5
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING