8220673: Add test library support for determining platform IP support

.../java/net/DatagramSocket/UnreferencedDatagramSockets.java

test/jdk/java/net/IPSupport/MinimumPermissions.java

test/jdk/java/net/IPSupport/MinimumPermissions.policy

test/jdk/java/net/Inet4Address/PingThis.java

test/jdk/java/net/Inet6Address/PreferIPv6AddressesTest.java

test/jdk/java/net/InetAddress/GetLocalHostWithSM.java

test/jdk/java/net/MulticastSocket/JoinLeave.java

test/jdk/java/net/MulticastSocket/NoLoopbackPackets.java

test/jdk/java/net/MulticastSocket/Promiscuous.java

.../java/net/MulticastSocket/SetGetNetworkInterfaceTest.java

test/jdk/java/net/MulticastSocket/Test.java

...ava/net/MulticastSocket/UnreferencedMulticastSockets.java

...java/net/NetworkInterface/NetworkInterfaceStreamTest.java

test/jdk/java/net/NetworkInterface/Test.java

test/jdk/java/net/ServerSocket/AcceptInheritHandle.java

test/jdk/java/net/ServerSocket/UnreferencedSockets.java

test/jdk/java/net/Socket/AddressTest.java

test/jdk/java/net/Socket/B6210227.java

test/jdk/java/net/Socket/CloseAvailable.java

test/jdk/java/net/Socket/DeadlockTest.java