RFR: 8352431: java/net/httpclient/EmptyAuthenticate.java uses "localhost" [v3]

[Volkan Yazici]

> Overhauls `EmptyAuthenticate` to
> 
> - Test all supported HTTP versions (i.e., HTTP/1.1 and HTTP/2)
> - Test both clear-text and SSL
> - Use `HttpServerAdapters.HttpTestServer::create` to avoid host-related problems

Volkan Yazici has updated the pull request incrementally with one additional commit since the last revision:

  Improve handler path
  
  Co-authored-by: Daniel Fuchs <67001856+dfuch at users.noreply.github.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24542/files
  - new: https://git.openjdk.org/jdk/pull/24542/files/7b5c8490..f175efe5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24542&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24542&range=01-02

  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/24542.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24542/head:pull/24542

PR: https://git.openjdk.org/jdk/pull/24542