RFR: 8351566: Consolidate third party artifacts used in tests [v6]

[Mikhail Yankelevich]

> 8351566: Consolidate third party artifacts used in tests

Mikhail Yankelevich has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 11 commits:

 - Merge branch 'master' into JDK-8351566
 - Merge branch 'master' into JDK-8351566
 - updated nss version
 - Merge branch 'master' into JDK-8351566
 - Fernando's comments:
   
   * cleanup
 - minor: imports fix
 - merge, docks and changind to use fetchOne
 - merging master
 - merge conflict fix
 - changed method flow, made unused methods private
 - ... and 1 more: https://git.openjdk.org/jdk/compare/0ad919c1...2b8ac007

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Changes: https://git.openjdk.org/jdk/pull/23988/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23988&range=05
  Stats: 363 lines in 5 files changed: 225 ins; 129 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/23988.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23988/head:pull/23988

PR: https://git.openjdk.org/jdk/pull/23988