[NS A43] Separate updating the linger timer and sending LOSING

This will be necessary because updating the linger timer is
what lets the network agent know whether the network is

Test: ConnectivityServiceTest
Change-Id: I9b5a36f6d5eac5a404eff6740cd8f4dcbb0c2786
1 file changed
tree: 1eb4f8481865d5d029de3a75b7642ef3ee23d573
  1. core/
  2. services/
  3. tests/