[jdk17u-dev] RFR: 8272358: Some tests may fail when executed with other locales than the US

[Martin Doerr]

Clean backport of [JDK-8272358](https://bugs.openjdk.java.net/browse/JDK-8272358)

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Commit messages:
 - Backport 29e552c03a2825f9526330072668a1d63ac68fd4

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/292/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=292&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272358
  Stats: 9 lines in 4 files changed: 1 ins; 0 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/292.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/292/head:pull/292

PR: https://git.openjdk.java.net/jdk17u-dev/pull/292