Add unit for setAllowNetworkingForProcess

Bug: 150028556
Test: atest netdclient_test
(clean cherry-pick from internal branch)
Merged-In: I0342b2981179dd77bf6a210cb7f6fa6ca069c487
Change-Id: I0342b2981179dd77bf6a210cb7f6fa6ca069c487
2 files changed