[jdk17u] RFR: 8263364: sun/net/www/http/KeepAliveStream/KeepAliveStreamCloseWithWrongContentLength.java wedged in getInputStream

[Evan Whelan]

Hi all,

Please review my clean backport of JDK-8263364.

This adds some test stability to the `sun/net/www/http/KeepAliveStream/KeepAliveStreamCloseWithWrongContentLength.java` test.

I verified the fix by running a test-repeat of 25 on this test.

Kind regards,
Evan

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Commit messages:
 - 8263364 - KeepAliveStream test wedged input

Changes: https://git.openjdk.java.net/jdk17u/pull/309/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=309&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263364
  Stats: 125 lines in 1 file changed: 84 ins; 13 del; 28 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/309.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/309/head:pull/309

PR: https://git.openjdk.java.net/jdk17u/pull/309