Fixing minor issue

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/test/java/org/wso2/carbon/policy/mgt/core/BasePolicyManagementDAOTest.java

@@ -101,6 +101,7 @@ public abstract class BasePolicyManagementDAOTest {
     }
 
     protected void initializeServices() throws Exception{
+        initDatSource();
         initSQLScript();
 
         DeviceConfigurationManager.getInstance().initConfig();