RFR: 8375585: Test java/lang/ProcessBuilder/PipelineLeaksFD.java failed

[Roger Riggs]

Revised test to explicitly compare file descriptor info only from parent and child.
If additional fd's are present in the child, it is hard to know their origin but they do not necessarily indicate a bug in Process launch.
 
Remove from the problem list.

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Commit messages:
 - 8375585: Test java/lang/ProcessBuilder/PipelineLeaksFD.java failed

Changes: https://git.openjdk.org/jdk/pull/29530/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29530&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375585
  Stats: 65 lines in 3 files changed: 31 ins; 13 del; 21 mod
  Patch: https://git.openjdk.org/jdk/pull/29530.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29530/head:pull/29530

PR: https://git.openjdk.org/jdk/pull/29530