The tests are also useful in CTS to ensure that the
ConnectivityDiagnosticsManager class API is implemented properly
(including behavior of the DataStallReport class for example).
Bug: 187935317
Test: atest ConnectivityDiagnosticsManagerTest
Change-Id: I86f39238054f43403f9a1e383dd2a935de84f06f
Move the tests together with packages/Connectivity code, so both can be
moved to packages/modules/Connectivity together.
Also reorganize unit tests in a unit/ directory, as other tests
(integration/, common/ etc.) have been added in tests/net since they
were created. This makes the directory structure consistent.
Test: atest FrameworksNetTests
Bug: 187814163
Merged-In: I254ffd1c08ec058d594b4ea55cbae5505f8497cc
Change-Id: I254ffd1c08ec058d594b4ea55cbae5505f8497cc