[jdk11u-dev] RFR: 8309305: sun/security/ssl/SSLSocketImpl/BlockedAsyncClose.java fails with jtreg test timeout

[SendaoYan]

8309305: sun/security/ssl/SSLSocketImpl/BlockedAsyncClose.java fails with jtreg test timeout

-------------

Commit messages:
 - Backport 8042a50b99a671390910afa5f816894f77255429

Changes: https://git.openjdk.org/jdk11u-dev/pull/2537/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2537&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309305
  Stats: 57 lines in 1 file changed: 20 ins; 24 del; 13 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2537.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2537/head:pull/2537

PR: https://git.openjdk.org/jdk11u-dev/pull/2537