Fix execution error

I just added Cloudapp and I ran into this error.

```
Error: Execution of '/usr/sbin/chown -R mark:staff /Applications/CloudApp.app' returned 1: chown: /Applications/CloudApp.app: No such file or directory
Error: /Stage[main]/Cloudapp/Package[CloudApp]/ensure: change from absent to present failed: Execution of '/usr/sbin/chown -R mark:staff /Applications/CloudApp.app' returned 1: c
hown: /Applications/CloudApp.app: No such file or directory
```

This PR fixes it.

Thanks!