Update manifests/init.pp

If a proxy is set and then later unset we need to remove the proxy file. As it currently sits it'll just sit there hanging out.
Update manifests/init.pp
Update manifests/init.pp
Add spec test for removing proxy configuration.
Merge branch 'proxy'

* proxy:
  Add spec test for removing proxy configuration.
  Update manifests/init.pp
  Update manifests/init.pp
  Update manifests/init.pp