Integrated: 8284015: ProblemList containers/docker/TestJcmd.java on linux-x64

[Daniel D.Daugherty]

A trivial fix to ProblemList containers/docker/TestJcmd.java on linux-x64.

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Commit messages:
 - 8284015: ProblemList containers/docker/TestJcmd.java on linux-x64

Changes: https://git.openjdk.java.net/jdk/pull/8042/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8042&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284015
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8042.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8042/head:pull/8042

PR: https://git.openjdk.java.net/jdk/pull/8042