RFR: 8371629: Add diagnostic output IPSupport.printPlatformSupport(System.out) to tests in java/nio/channels directory -- part I

[serhiysachkov]

Add diagnostic output IPSupport.printPlatformSupport(System.out) to tests in java/nio/channels directory -- part I

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Commit messages:
 - 8371629: Add diagnostic output IPSupport.printPlatformSupport(System.out) to tests in java/nio/channels directory -- part I

Changes: https://git.openjdk.org/jdk/pull/28420/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28420&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371629
  Stats: 107 lines in 16 files changed: 91 ins; 1 del; 15 mod
  Patch: https://git.openjdk.org/jdk/pull/28420.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28420/head:pull/28420

PR: https://git.openjdk.org/jdk/pull/28420