[jdk17u-dev] RFR: 8292990: Improve test coverage for XPath Axes: parent

[Goetz Lindenmaier]

I backport this for parity with 17.0.8-oracle.

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

Commit messages:
 - Backport e393973761eec8fe08d901d93fc5a9261b6faf14

Changes: https://git.openjdk.org/jdk17u-dev/pull/1315/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1315&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292990
  Stats: 165 lines in 2 files changed: 165 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1315.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1315/head:pull/1315

PR: https://git.openjdk.org/jdk17u-dev/pull/1315