Move net unit tests to packages/Connectivity

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
145 files changed
tree: a2e5825314542e2c2d3e490af0bc7a95f4c7698e
  1. framework/
  2. service/
  3. services/
  4. tests/
  5. OWNERS
  6. TEST_MAPPING