[jdk17u-dev] RFR: 8307648: java/net/httpclient/ExpectContinueTest.java timed out

[Alexey Bakhtin]

The backport is not clean.

JDK17 does not have JDK-8293786. As a result, the debug log is not merged into Stream::incoming_reset method. These changes could be skipped because they are not required for this functionality

Also, ExpectContinueTest test was added in JDK21 as part of JDK-8286171. Not backported to JDK17. The changes for this test are skipped

All java/net/httpclient JTREG tests passed

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Depends on: https://git.openjdk.org/jdk17u-dev/pull/2798

Commit messages:
 - Backport 04b0e785f6b9b4629b77bb19f2b072434be4951c

Changes: https://git.openjdk.org/jdk17u-dev/pull/2799/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2799&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307648
  Stats: 24 lines in 2 files changed: 19 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2799.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2799/head:pull/2799

PR: https://git.openjdk.org/jdk17u-dev/pull/2799