RFR: JDK-8326496: [test] checkHsErrFileContent support printing hserr in error case [v2]

[Matthias Baesken]

> checkHsErrFileContent checks hs error files for existance and non-existance of some user provided patterns. However it should also have an option to print the hs_err file in case of a failing check, this would make error analysis easier.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  add verbose param doc

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17978/files
  - new: https://git.openjdk.org/jdk/pull/17978/files/ee68bd9f..4af66ce5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17978&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17978&range=00-01

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17978.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17978/head:pull/17978

PR: https://git.openjdk.org/jdk/pull/17978