[jdk21u-dev] RFR: 8336257: Additional tests in jmxremote/startstop to match on PID not app name

[SendaoYan]

Hi all,

This pull request contains a backport of commit [687601eb](https://github.com/openjdk/jdk/commit/687601ebcaedf133fd4d5cecc42c5aadf9c73f3c) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Kevin Walls on 11 Jul 2024 and was reviewed by Chris Plummer, Alan Bateman, Alex Menkov and Daniel D. Daugherty.

Thanks!

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Commit messages:
 - Backport 687601ebcaedf133fd4d5cecc42c5aadf9c73f3c

Changes: https://git.openjdk.org/jdk21u-dev/pull/1156/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1156&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336257
  Stats: 6 lines in 2 files changed: 2 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1156.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1156/head:pull/1156

PR: https://git.openjdk.org/jdk21u-dev/pull/1156