Send VPN manager event when VPN is deactivated

Bug: 191413541
Test: atest FrameworksNetTests:VpnTest
Change-Id: I35fc360204f0227a969ff2b12a4c47f701a55a9c
(cherry picked from commit 3f5bf1f059dbf0ffac2eb4c7c0f729cbfdc2c242)
Merged-In: I35fc360204f0227a969ff2b12a4c47f701a55a9c
1 file changed