Add IpConfigurationTest for new @SystemApi

Add new cts for @SystemApi in IpConfiguration.

Bug: 139268426
Bug: 135998869
Test: atest android.net.cts.IpConfigurationTest
Change-Id: I942791abbdccc10d0e2a0018339a2ee4f74c7645
1 file changed
tree: f14f82a64d8cc7e6cdab97296e5af5ee4ca5dcf8
  1. tests/