RFR: 8343610: InOutPathTest jpackage test produces invalid app image on macOS

[Alexey Semenyuk]

- fix `JPackageCommand.excludeAppLayoutAsserts()`;
- fix `InOutPath` test case that will make jpackage produce an invalid app image on macOS.

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Commit messages:
 - Better wording of the comment
 - One more try to make it work on OSX
 - Bugfix for the case when `--app-content` is set to `--temp`
 - Bugfix and additional verification of input added
 - Merge branch 'master' into JDK-8343610
 - 8343610: InOutPathTest jpackage test produces invalid app image on macOS

Changes: https://git.openjdk.org/jdk/pull/21909/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21909&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343610
  Stats: 59 lines in 4 files changed: 46 ins; 0 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/21909.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21909/head:pull/21909

PR: https://git.openjdk.org/jdk/pull/21909