- Fix conversion for boolean for sql query. If boolean is not wellformed

a rsql syntax error is thrown
- Escape % for sql query#
- Remove operator like ("=li=")
- Extend not equal operator with not like jpa query

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-rest-resource/src/main/java/org/eclipse/hawkbit/rest/resource/TargetResource.java

@@ -15,8 +15,6 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
-import javax.persistence.EntityManager;
-
 import org.eclipse.hawkbit.repository.ActionFields;
 import org.eclipse.hawkbit.repository.ActionStatusFields;
 import org.eclipse.hawkbit.repository.DeploymentManagement;
@@ -76,9 +74,6 @@ public class TargetResource {
     @Autowired
     private DeploymentManagement deploymentManagement;
 
-    @Autowired
-    private EntityManager entityManager;
-
     /**
      * Handles the GET request of retrieving a single target within SP.
      *