Set underlying networks into NetworkCapabilities directly

The constructor of NetworkAgentInfo will refer to the underlying
networks of NetworkCapabilities and set declaredUnderlyingNetworks
directly, so there is no need to call setUnderlyingNetworks() to
update declaredUnderlyingNetworks.

Bug: 191918368
Test: atest FrameworksNetTests:ConnectivityServiceTest
Change-Id: Idb5f0232455603567d02591b0cdbab4764155ee9
1 file changed