[jdk17u-dev] RFR: 8321718: ProcessTools.executeProcess calls waitFor before logging

[Goetz Lindenmaier]

I backport this to keep the tests up-to-date.  It will make follow-up changes clean(er).

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Commit messages:
 - Backport 9ab29f8dcd1c0092e4251f996bd53c704e87a74a

Changes: https://git.openjdk.org/jdk17u-dev/pull/3494/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3494&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321718
  Stats: 61 lines in 3 files changed: 47 ins; 11 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3494.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3494/head:pull/3494

PR: https://git.openjdk.org/jdk17u-dev/pull/3494