Read test redis port configuration from test.js env

test/support/config.js

@@ -1,5 +1,8 @@
 var _ = require('underscore');
 
+
+require(__dirname + '/test_helper');
+
 module.exports = function(opts) {
 
     var config = {
@@ -7,7 +10,7 @@ module.exports = function(opts) {
             max: 10, 
             idleTimeoutMillis: 1, 
             reapIntervalMillis: 1,
-            port: 6333 // TODO: read from test env ?
+            port: global.environment.redis.port
         }
     }