Apply their respective jarjar rules on tethering and general
connectivity tests, then merge both into the coverage tests suite.
This is necessary to ensure that classes covered by tests have names
matching classes used in code.

Also fix IpConnectivityLogTest to use the module utility instead of the
hidden BitUtils, as the test would fail after internal utils are
jarjared.

Bug: 187935317
Test: atest ConnectivityCoverageTests TetheringCoverageTests
Change-Id: Ib95b58dab93f7adebc445b662a6d15db1ce0e7c2