initialize the WMTS layer with style.identifier instead of the whole object. r=bartvde (closes #3027)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11135 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/WMTSCapabilities.js

@@ -149,7 +149,7 @@ OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
                 OpenLayers.Util.applyDefaults(config, {
                     url: capabilities.operationsMetadata.GetTile.dcp.http.get,
                     name: layerDef.title,
-                    style: style,
+                    style: style.identifier,
                     matrixIds: matrixSet.matrixIds
                 })
             );