Remove the usage of NETID_UNSET from Vpn.java

Modify Vpn#getNetId() to Vpn#getNetwork() and uses NETID_UNSET
when getNetwork() returns null in ConnectivityServiceTest.

Bug: 182963397
Test: atest FrameworksNetTests
Change-Id: I69d449705b1dc541287c72af8dc7705dc4733109
Merged-In: I69d449705b1dc541287c72af8dc7705dc4733109
  (cherry-picked from ag/13927650)
1 file changed
tree: c22f3658e0a99e0d9ce1e50fb1aaf644a095393c
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING