Remove custom Vagrantfile-reference. Fix #2

Author: Sebastian Gumprich

.kitchen_debian.yml

@@ -1,7 +1,6 @@
 ---
 driver:
   name: vagrant
-  vagrantfile_erb: Vagrantfile.erb
 
 provisioner:
   name: ansible_playbook
@@ -10,6 +9,7 @@ provisioner:
   require_ansible_omnibus: true
   ansible_omnibus_url: https://raw.githubusercontent.com/rndmh3ro/ansible_debian_install/master/ansible-install.sh 
 
+platforms:
 - name: debian-6
   driver_config:
     box: debian-6