avoid access warnings

Author: hauner

src/main/groovy/com/github/hauner/openapi/spring/model/parameters/Parameter.groovy

@@ -24,9 +24,9 @@ import com.github.hauner.openapi.spring.model.datatypes.DataType
  * @author Martin Hauner
  */
 abstract class Parameter {
-    protected String name
+    String name
     protected boolean required
-    protected DataType dataType
+    DataType dataType
 
     /**
      * The plain name of the annotation for this parameter (ie. without the @). Possible results