Add test case to the build
<class name="io.siddhi.core.managment.PlaybackTestCase"/>
<class name="io.siddhi.core.managment.LogTestCase"/>
<class name="io.siddhi.core.managment.StateTestCase"/>
+ <class name="io.siddhi.core.managment.SandboxTestCase"/>
<class name="io.siddhi.core.managment.StatisticsTestCase"/>
<class name="io.siddhi.core.managment.PersistenceTestCase"/>
<class name="io.siddhi.core.managment.IncrementalPersistenceTestCase"/>
