[jdk11u-dev] RFR: 8222430: Add tests for ElementKind predicates

[Goetz Lindenmaier]

I backport this for parity with 11.0.19-oracle.

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Commit messages:
 - Backport 4a9f7612be2f4949c20c12b5faae7e215f175875

Changes: https://git.openjdk.org/jdk11u-dev/pull/1726/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1726&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8222430
  Stats: 74 lines in 1 file changed: 74 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1726.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1726/head:pull/1726

PR: https://git.openjdk.org/jdk11u-dev/pull/1726