RFR: 8373893: Refactor networking http server tests to use JUnit [v5]

[Michael McMahon]

> Hi,
> 
> This is an update to the httpserver networking tests to change the usage of testng to junit.
> 
> Thanks,
> Michael

Michael McMahon has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains seven commits:

 - Merge branch 'master' into JUNIT-8373893
 - removed remaining PER_CLASS annotations
 - review update
 - Apply suggestions from code review
   
   Co-authored-by: Daniel Jelinski <djelinski1 at gmail.com>
 - test update
 - copyright update
 - output from tool modified for a few files

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

Changes: https://git.openjdk.org/jdk/pull/28908/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28908&range=04
  Stats: 1076 lines in 31 files changed: 176 ins; 139 del; 761 mod
  Patch: https://git.openjdk.org/jdk/pull/28908.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28908/head:pull/28908

PR: https://git.openjdk.org/jdk/pull/28908