Add new cacheSize option to ol.source

Option added to:
 - olx.source.BingMapsOptions
 - olx.source.MapQuestOptions
 - olx.source.OSMOptions
 - olx.source.StamenOptions
 - olx.source.TileArcGISRestOptions
 - olx.source.TileImageOptions
 - olx.source.TileJSONOptions
 - olx.source.TileWMSOptions
 - olx.source.VectorTileOptions
 - olx.source.XYZOptions
 - olx.source.WMTSOptions
 - olx.source.ZoomifyOptions

src/ol/source/tilejsonsource.js

@@ -31,6 +31,7 @@ ol.source.TileJSON = function(options) {
 
   goog.base(this, {
     attributions: options.attributions,
+    cacheSize: options.cacheSize,
     crossOrigin: options.crossOrigin,
     projection: ol.proj.get('EPSG:3857'),
     reprojectionErrorThreshold: options.reprojectionErrorThreshold,