Added default varnish config to repo

references code4aap/drupal-aap-campaign#123
Varnish config after first use, but before rework

references code4aap/drupal-aap-campaign#123
Varnish config changed after more research

references code4aap/drupal-aap-campaign#123
Merge pull request #132 from sumeetpareek/issue123

Pull request for Issue #123