[jdk15u-dev] RFR: 8259707: LDAP channel binding does not work with StartTLS extension

[Yuri Nesterenko]

A necessary follow-up to JDK-8245527. Clean backport. All relevant tests do pass.

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Commit messages:
 - Backport 874aef4a8f7ca503591e21333c092d1a969bc5a8

Changes: https://git.openjdk.org/jdk15u-dev/pull/229/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk15u-dev&pr=229&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8259707
  Stats: 74 lines in 2 files changed: 39 ins; 21 del; 14 mod
  Patch: https://git.openjdk.org/jdk15u-dev/pull/229.diff
  Fetch: git fetch https://git.openjdk.org/jdk15u-dev pull/229/head:pull/229

PR: https://git.openjdk.org/jdk15u-dev/pull/229