RFR: JDK-8263256: Test java/net/Inet6Address/serialize/Inet6AddressSerializationTest.java fails due to dynamic reconfigurations of network interface during test

[Mark Sheppard]

Test java/net/Inet6Address/serialize/Inet6AddressSerializationTest.java fails fails due to dynamic reconfigurations of network interface during test - this fix uses the utility method NetworkConfiguration::isSameInterface to replace NetworkInterface::equals method call. Additionally, for macosx the awdl and llw interfaces are excluded from the test

Please oblige and review this change to address issue https://bugs.openjdk.org/browse/JDK-8263256

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Commit messages:
 - JDK-8263256: Test java/net/Inet6Address/serialize/Inet6AddressSerializationTest.java fails due to dynamic reconfigurations of network interface during test - a fix which uses the utility method NetworkConfiguration::isSameInterface to replace NetworkInterface::equals method call. Additionally, for macosx the awdl and llw interfaces are excluded from the test

Changes: https://git.openjdk.org/jdk/pull/16998/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16998&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8263256
  Stats: 17 lines in 1 file changed: 14 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16998.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16998/head:pull/16998

PR: https://git.openjdk.org/jdk/pull/16998