Adding more test cases for stacked link properties for local network.

Addressing feedback from previous change "Adding stacked link addresses
to local_net_access map" and adding more test cases for impact of
stacked link properties on local network prefixes.

Bug: 369815823
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.server.BpfNetMapsTest
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.server.CSLocalNetworkProtectionTest
Change-Id: I4d32d86d3e083a1a14b845583fd80a7a4b18ae5f
2 files changed