Fix criticals sonar issues

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

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/common/tagdetails/AbstractTagToken.java

@@ -43,6 +43,9 @@ import com.vaadin.ui.themes.ValoTheme;
 
 /**
  * Abstract class for target/ds tag token layout.
+ *
+ * @param <T>
+ *            the special entity
  */
 public abstract class AbstractTagToken<T extends BaseEntity> implements Serializable {
 
@@ -75,6 +78,9 @@ public abstract class AbstractTagToken<T extends BaseEntity> implements Serializ
     @Autowired
     protected ManagementUIState managementUIState;
 
+    // BaseEntity implements Serializable so this entity is serializable. Maybe
+    // a sonar bug
+    @SuppressWarnings("squid:S1948")
     protected T selectedEntity;
 
     @PostConstruct