[jdk11u-dev] RFR: 8208471: nsk/jdb/unwatch/unwatch002/unwatch002.java fails with "Prompt is not received during 300200 milliseconds"

[Goetz Lindenmaier]

I backport this for parity with 11.0.17-oracle.

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

Commit messages:
 - Backport db614657618a4e67128ec1f243af2c740988fad0

Changes: https://git.openjdk.org/jdk11u-dev/pull/1235/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1235&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8208471
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1235.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1235/head:pull/1235

PR: https://git.openjdk.org/jdk11u-dev/pull/1235