Updating SimplePush version to 0.12.1 in version 1.0.1.

This PR updates version 1.0.1 of the server to include SimplePush Server 0.12.1. 
The 0.12.1 version is a minor update to the default [SockJS CDN URL](https://issues.jboss.org/browse/AGSMPLPUSH-68). 

To test this you can either build an application and deploy to your own OpenShift account:
```shell
rhc create-app appname "https://cartreflect-claytondev.rhcloud.com/reflect?github=danbev/openshift-origin-cartridge-aerogear-push-wildfly&commit=0812a73189713d5de86a93d5cab3f07bc1504144"
```
Change the ```appname``` to a name something suitable. 
Next, you can verify that the new URL is returned by running the following curl command:
```shell
$ curl http://cdn-dbevenius.rhcloud.com:8000/simplepush/iframe.html
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <script>
    document.domain = document.domain;
    _sockjs_onload = function(){SockJS.bootstrap_iframe();};
  </script>
  <script src="http://cdn.jsdelivr.net/sockjs/0.3.4/sockjs.min.js"></script>
</head>
<body>
  <h2>Don't panic!</h2>
  <p>This is a SockJS hidden iframe. It's used for cross domain magic.</p>
</body>
</html>$
```
You should notice that the script source is now ```"http://cdn.jsdelivr.net/sockjs/0.3.4/sockjs.min.js```.