Review request: JDK-8080108: [TEST_BUG] ERROR: No IPv6 address returned from platform

Hello, Please review the test bug fix https://bugs.openjdk.java.net/browse/JDK-8080108 See webrev here http://cr.openjdk.java.net/~kshefov/8080108/webrev.00/ The original test (com/sun/jndi/dns/IPv6NameserverPlatformParsingTest.java @bug 6991580) fails automatically if /etc/resolv.conf file doesn't contain IPv6 nameserver entries. It's needed to edit /etc/resolv.conf manually before the test run, so this is a manual regression test. The test is intended to be run on non-Windows systems. Fix: - provided standard test machinery for regression manual tests with instructions for a user; - the test excluded for Windows. Tested on Linux and Windows(to make sure it's excluded). Thanks, Alexander