[jdk11u-dev] RFR: 8267256: Extend minimal retry for loopback connections on Windows to PlainSocketImpl

[Mat Carter]

Backport of JDK-8267256

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/627

Commit messages:
 - Backport df332ff6e8bcee2cb5eeac1eefbc5c55a3fe8170

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/628/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=628&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267256
  Stats: 13 lines in 1 file changed: 13 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/628.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/628/head:pull/628

PR: https://git.openjdk.java.net/jdk11u-dev/pull/628