RFR: 8373893: Refactor networking http server tests to use JUnit [v4]

[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 incrementally with one additional commit since the last revision:

  removed remaining PER_CLASS annotations

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28908/files
  - new: https://git.openjdk.org/jdk/pull/28908/files/b596da7f..036e7d25

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28908&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28908&range=02-03

  Stats: 122 lines in 22 files changed: 0 ins; 43 del; 79 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