[jdk11u-dev] RFR: 8237798: rewrite vmTestbase/jit/tiered from shell to java

[Goetz Lindenmaier]

I backport this for parity with 11.0.15-oracle.

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Commit messages:
 - Backport fc8d71b11946855c08055bc7664fc9795c2a8799

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/766/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=766&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8237798
  Stats: 189 lines in 4 files changed: 76 ins; 112 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/766.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/766/head:pull/766

PR: https://git.openjdk.java.net/jdk11u-dev/pull/766