RFR: 8315406: serviceability/jdwp/AllModulesCommandTest.java fails after JDK-8314834 [v3]

[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 incrementally with one additional commit since the last revision:

  removed unused code.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15499/files
  - new: https://git.openjdk.org/jdk/pull/15499/files/c1650fc5..45622404

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15499&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15499&range=01-02

  Stats: 13 lines in 2 files changed: 0 ins; 12 del; 1 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