Fixed the uaa start up router registration to use the

loopback ip instead of localhost because the router
stopped routing requests to it.

Change-Id: Ide3e3949503543f99d4d7ab0ff514837f95f34f3

bin/uaa

@@ -70,7 +70,7 @@ File.open(pidfile, 'w') {|f| f.write(pid) }
 
 logger.info("Preparing to launch NATS from #{pid}")
 
-router_msg = { :host => config["uaa"]["host"]||"localhost", :port => config["uaa"]["port"]||8080, :uris => config["uaa"]["uris"]||["uaa.vcap.me", "login.vcap.me"], :tags => {:component => "UAA"} }
+router_msg = { :host => config["uaa"]["host"]||"127.0.0.1", :port => config["uaa"]["port"]||8080, :uris => config["uaa"]["uris"]||["uaa.vcap.me", "login.vcap.me"], :tags => {:component => "UAA"} }
 router_json = Yajl::Encoder.encode(router_msg)
 
 # If there was more than one node the uuid should be #{index}-#{constant}