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

[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.

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

Commit messages:
 - JDK-8326496

Changes: https://git.openjdk.org/jdk/pull/17978/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17978&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326496
  Stats: 63 lines in 2 files changed: 55 ins; 2 del; 6 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