RFR: 8373893: Refactor networking http server tests to use JUnit [v6]

[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:

  Update test/jdk/com/sun/net/httpserver/simpleserver/CommandLinePortNotSpecifiedTest.java
  
  Co-authored-by: Daniel Jelinski <djelinski1 at gmail.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28908/files
  - new: https://git.openjdk.org/jdk/pull/28908/files/3dafe1fa..db70f8d2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28908&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28908&range=04-05

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