Validate and clamp the value populated from the `jdk.httpclient.bufsize` system property. Added two new tests: Does clamping work? Does the minimum value wedge the client?
------------- Commit messages: - Clamp `Utils::BUFSIZE` Changes: https://git.openjdk.org/jdk/pull/27874/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27874&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8367976 Stats: 230 lines in 4 files changed: 216 ins; 10 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/27874.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27874/head:pull/27874 PR: https://git.openjdk.org/jdk/pull/27874
