Print state and keepalive information in the dump.
Also update ConnectivityService and the corresponding test to
create AutomaticOnOffKeepaliveTracker from a Dependencies class.
ConnectivityService#dump() will require READ_DEVICE_CONFIG
permission because of the new dump() in AutomaticOnOffKeepaliveTreacker.
ConnectivityServiceTest should focus on verifying design in
ConnectivityService, so skipping the DeviceConfig check via a fake
Dependencies class in the unit test.
Sample dump:
AutomaticOnOff enabled: true
AutomaticOnOffKeepalive [KeepaliveInfo [ type=1 network=100 startedS ... ], state=STATE_ENABLED ]
Bug: 259000745
Test: m ; atest FrameworksNetTests CtsNetTestCases
Change-Id: I9ac725bcef7daec1d1a12bad592b7fa6856a1707
7c17c283ea