Fix sonar findings (#3015)

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-repository/hawkbit-repository-jpa/src/test/java/org/eclipse/hawkbit/repository/jpa/autocleanup/AutoCleanupSchedulerTest.java

@@ -13,6 +13,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.Lock;
 
 import org.eclipse.hawkbit.repository.jpa.AbstractJpaIntegrationTest;
 import org.eclipse.hawkbit.repository.jpa.autocleanup.AutoCleanupScheduler.CleanupTask;
@@ -33,7 +34,7 @@ class AutoCleanupSchedulerTest extends AbstractJpaIntegrationTest {
     private final AtomicInteger counter = new AtomicInteger();
 
     @Autowired
-    private LockRegistry lockRegistry;
+    private LockRegistry<Lock> lockRegistry;
 
     @BeforeEach
     void setUp() {

hawkbit-repository/hawkbit-repository-jpa/src/test/java/org/eclipse/hawkbit/repository/jpa/scheduler/AutoAssignHandlerTest.java

@@ -58,7 +58,7 @@ class AutoAssignHandlerTest {
     private PlatformTransactionManager transactionManager;
 
     @Mock
-    LockRegistry lockRegistry;
+    LockRegistry<Lock> lockRegistry;
 
     private JpaAutoAssignHandler autoAssignHandler;