Enable jdbc_test in Zuul

* Fix condition in test script run-jdbc_test.sh
* Add jobs jdbc_test and jdbc_test-experimental
  to Zuul.
* The job jdbc_test has been added to the following
  pipelines: daily, pre-release, trafodion/dcs check
  and trafodion/dcs gate.
* Both are currently set to non-voting at the moment.
  The jdbc_test job will be changed to voting after a
  couple of Successful runs through Zuul.
* Implements 2nd half of blueprint infra-add-jdbc-tests.

Change-Id: Icdaf0c783b33abcf0474ea0b8ebe1eea01172ae2