Add JDBC test definition to Jenkins

* Creates a new test script run-jdbc_test.sh to launch the
  tests.
* Creates Jenkins jobs named jdbc_test and jdbc_test-experimental
* Create Jenkins publishers jdbc-xunit and jdbc_test-log
* Implements first half of blueprint infra-add-jdbc-tests.

Change-Id: Ie92cc46943296cb2f6a8b1492314238d47f70bb9
Merge "Add JDBC test definition to Jenkins"