[jdk17u-dev] RFR: 8327989: java/net/httpclient/ManyRequest.java should not use "localhost" in URIs

[Amos Shi]

Backport of [JDK-8327989](https://bugs.openjdk.org/browse/JDK-8327989)

Testing
- Local: Test passed
  - `ManyRequests.java`: Test results: passed: 1
- Pipeline: 
- Testing Machine:

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Commit messages:
 - Backport da4dd7c008da4be54ee5f58d1ac19f440fd2a74e

Changes: https://git.openjdk.org/jdk17u-dev/pull/2436/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2436&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327989
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2436.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2436/head:pull/2436

PR: https://git.openjdk.org/jdk17u-dev/pull/2436