RFR: 8272305: several hotspot runtime/modules don't check exit codes

[Igor Ignatyev]

Hi all,

could you please review this patch that adds exit code checks to five `runtime/modules` tests?

testing: `runtime/modules` on `{linux,windows,macos}-x64`

Thanks,
-- Igor

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Commit messages:
 - copyright year
 - 8272305

Changes: https://git.openjdk.java.net/jdk/pull/5078/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5078&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272305
  Stats: 22 lines in 5 files changed: 13 ins; 0 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5078.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5078/head:pull/5078

PR: https://git.openjdk.java.net/jdk/pull/5078