[8u] RFR: 8226928: [TESTBUG] test/java/net/NetworkInterface/IPv4Only.java fails intermittently on AIX

[Severin Gehwolf]

Hi,

Please review this trivial test fix for JDK 8u. JDK 11u's version of
the same test sets the property on the command line which doesn't have
the issue on AIX. This patch makes JDK 11u and 8u aligned when it comes
to IPv4Only.java test. I didn't backport the 11 change, as that's been
part of a huge "Modular Run-Time Images" change, not suitable for JDK
8u. Thoughts?

Bug: https://bugs.openjdk.java.net/browse/JDK-8226928
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8226928/01/webrev/

Testing: Passes before/after this change on Linux x86_64 (unsurprisingly).

Note that I've not reproduce the issue on AIX, I'm just the person
reporting the issue and thought that I might as well fix it right away.
Shouldn't really be controversal.

Thanks,
Severin