[jdk18u] RFR: 8277795: ldap connection timeout not honoured under contention

[Rob McKenna]

8277795: ldap connection timeout not honoured under contention

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Commit messages:
 - Backport 3d926dd66ef6551e91a4ebbbc59dcff58f5ede5a

Changes: https://git.openjdk.java.net/jdk18u/pull/20/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=20&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277795
  Stats: 467 lines in 5 files changed: 324 ins; 72 del; 71 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/20.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/20/head:pull/20

PR: https://git.openjdk.java.net/jdk18u/pull/20