RFR: 8315406: serviceability/jdwp/AllModulesCommandTest.java fails after JDK-8314834 [v4]

[Leonid Mesnik]

> Test failed because of unexpected output of version string. 
> The standard convention for tests is to skip any unexpected output (version string, VM warning, vm logging) and only fail on expected error patterns. 
> Fix is tested by running with default options and  with '-showversion' vm option.

Leonid Mesnik has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:

 - Merge branch 'master' of https://github.com/openjdk/jdk into 8315406
 - fix
 - removed unused code.
 - restore errorhandler
 - 8315406

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/15499/files
  - new: https://git.openjdk.org/jdk/pull/15499/files/45622404..797c9f28

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15499&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15499&range=02-03

  Stats: 1962 lines in 70 files changed: 1581 ins; 123 del; 258 mod
  Patch: https://git.openjdk.org/jdk/pull/15499.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15499/head:pull/15499

PR: https://git.openjdk.org/jdk/pull/15499