[jdk8u-dev] RFR: 8237834: com/sun/jndi/ldap/LdapDnsProviderTest.java failing with LDAP response read timeout

[yaqsun]

This is a backport of JDK-8237834.
The reported bug is reproducible in 8u and needs to be backported.

This backport is clean.

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Commit messages:
 - Backport 3f505750ed6959c0f2b130f29915d3dc27344da7

Changes: https://git.openjdk.org/jdk8u-dev/pull/606/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=606&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8237834
  Stats: 110 lines in 1 file changed: 94 ins; 11 del; 5 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/606.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/606/head:pull/606

PR: https://git.openjdk.org/jdk8u-dev/pull/606