RFR: 8367801: jtreg failure_handler - don't use the -L option for ps command

[Jaikiran Pai]

Can I please get a review of this trivial change to a jtreg failure handler command?

As noted in https://bugs.openjdk.org/browse/JDK-8367801, the change in this PR removes the use of "-L" option from the "ps" command to reduce the noise in the output of "ps". I have verified that the command continues to function properly when run as a failure handler action and it no longer contains the thread entries in the output.

The use of "-L" was introduced when this support to run failure handlers was first introduced in https://bugs.openjdk.org/browse/JDK-8132961. So there's wasn't explicit prior reason for including the "-L" option.

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Commit messages:
 - 8367801: jtreg failure_handler - don't use the -L option for ps command

Changes: https://git.openjdk.org/jdk/pull/27328/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27328&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367801
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/27328.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27328/head:pull/27328

PR: https://git.openjdk.org/jdk/pull/27328