ability to write out PropertyNames in a GetFeature request

src/ol/parser/ogc/wfsparser_v1.js

@@ -42,11 +42,13 @@ ol.parser.ogc.WFS_v1 = function(opt_options) {
           node.setAttribute('maxFeatures', options.maxFeatures);
         }
       }
-      // TODO set xsi:schemaLocation
       for (var i = 0, ii = this.featureTypes.length; i < ii; i++) {
         options.featureType = this.featureTypes[i];
         this.writeNode('Query', options, null, node);
       }
+      this.setAttributeNS(
+          node, 'http://www.w3.org/2001/XMLSchema-instance',
+          'xsi:schemaLocation', this.schemaLocation);
       return node;
     }
   };

src/ol/parser/ogc/wfsparser_v1_0_0.js

@@ -63,9 +63,8 @@ ol.parser.ogc.WFS_v1_0_0 = function(opt_options) {
       }
       if (goog.isDef(options.propertyNames)) {
         for (var i = 0, ii = options.propertyNames.length; i < ii; i++) {
-          this.writeNode('ogc:PropertyName', {
-            property: options.propertyNames[i]
-          }, 'http://www.opengis.net/ogc', node);
+          this.writeNode('PropertyName', options.propertyNames[i],
+              'http://www.opengis.net/ogc', node);
         }
       }
       if (goog.isDef(options.filter)) {

src/ol/parser/ogc/wfsparser_v1_1_0.js

@@ -77,7 +77,7 @@ ol.parser.ogc.WFS_v1_1_0 = function() {
         }
       }
       if (goog.isDef(options.filter)) {
-        this.writeNode('ogc:Filter', options.filter,
+        this.writeNode('Filter', options.filter,
             'http://www.opengis.net/ogc', node);
       }
       return node;