[jdk11u-dev] RFR: 8266461: tools/jmod/hashes/HashesTest.java fails: static @Test methods

[George Adams]

Backport required to bump JDK11u to jtreg 6

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Commit messages:
 - Backport e90388bc1e7bba92675fa799d9da77aa4d6e1a05

Changes: https://git.openjdk.org/jdk11u-dev/pull/1252/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1252&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8266461
  Stats: 116 lines in 1 file changed: 5 ins; 18 del; 93 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1252.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1252/head:pull/1252

PR: https://git.openjdk.org/jdk11u-dev/pull/1252