[jdk11u-dev] RFR: 8179880: Refactor javax/security shell tests to plain java tests

[Goetz Lindenmaier]

I downport this for parity with 11.0.13-oracle.

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Commit messages:
 - 7f55dc15769bbab59024aa49671bced633de40ed

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/429/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=429&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8179880
  Stats: 104 lines in 2 files changed: 11 ins; 85 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/429.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/429/head:pull/429

PR: https://git.openjdk.java.net/jdk11u-dev/pull/429