[jdk11u-dev] RFR: 8266461: tools/jmod/hashes/HashesTest.java fails: static @Test methods [v3]

[George Adams]

> Backport required to bump JDK11u to jtreg 6
> 
> `test/jdk/tools/jmod/hashes/HashesTest.java`
> - several occurrences of `ht.checkHashes("j2", Set.of("j3"));` (in jdk) not matching up with `ht.checkHashes("j2", "j3");` in jdk11u.
> - [`testHashModulesPattern`](https://github.com/openjdk/jdk/commit/e90388bc1e7bba92675fa799d9da77aa4d6e1a05#diff-90d72039e87e2a26eb11bd8e15e499aa96eef5372361fb1a47eec0d5ab168f5aR322) does not exist in jdk11u so I removed it from the patch.

George Adams has updated the pull request incrementally with one additional commit since the last revision:

  Backport 5eda812f53bfe65d11f6241b0831c588c1400b08

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1252/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1252/files/e1d5efc5..d877be7c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1252&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1252&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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