RFR: 8361423: Add IPSupport::printPlatformSupport to java/net/NetworkInterface/IPv4Only.java [v2]

[Ayush Rigal]

> This is part of a series of diagnostic output updates to java.net tests to assist in the analysis of failures in IPv6 only environments
> for Linux there is not IPv4 configuration but the IPv4 stack remains enabled
> For macOS, and windows the IPv4 stacks are disabled, and IPv4 configuration removed
> 
> add IPSupport::printPlatformSupport(System.out);
> 
> to the start of main

Ayush Rigal has updated the pull request incrementally with one additional commit since the last revision:

  8361423: Add IPSupport::printPlatformSupport to java/net/NetworkInterface/IPv4Only.java

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/26265/files
  - new: https://git.openjdk.org/jdk/pull/26265/files/45272937..c688e550

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26265&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26265&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26265.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26265/head:pull/26265

PR: https://git.openjdk.org/jdk/pull/26265