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

[yaqsun]

This is a backport of [JDK-8237834](https://bugs.openjdk.org/browse/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
 - del tab
 - Merge branch 'openjdk:master' into backport-8222299
 - update test/lib/jdk/test/lib/containers/docker/DockerTestUtils.java
 - Merge branch 'openjdk:master' into backport-8222299
 - Backport 66c817134fa012d53128eecfc1bac0c32c678145
 - Merge branch 'openjdk:master' into backport-8222299
 - Backport 66c817134fa012d53128eecfc1bac0c32c678145
 - Backport 66c817134fa012d53128eecfc1bac0c32c678145

Changes: https://git.openjdk.org/jdk8u-dev/pull/605/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=605&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8237834
  Stats: 129 lines in 17 files changed: 108 ins; 13 del; 8 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/605.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/605/head:pull/605

PR: https://git.openjdk.org/jdk8u-dev/pull/605