RFR: JDK-8261095: Add test for clhsdb symbol command

[Vipin Sharma]

JDK-8261095: Add test for clhsdb symbol command

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

Commit messages:
 - JDK-8261095: Add test for clhsdb symbol command

Changes: https://git.openjdk.java.net/jdk/pull/2863/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2863&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261095
  Stats: 113 lines in 1 file changed: 113 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2863.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2863/head:pull/2863

PR: https://git.openjdk.java.net/jdk/pull/2863