plugin: Give the provider a higher priority over Vagrant's builtin VBox provider

CHANGELOG.md

@@ -4,6 +4,11 @@ BACKWARDS INCOMPATIBILITIES:
 
   - Support for Vagrant versions prior to 1.5 have been removed.
 
+IMPROVEMENTS:
+
+  - The provider will now have a higher priority over the VirtualBox provider
+    in case VirtualBox is installed alongside lxc dependecies.
+
 
 ## [1.0.1](https://github.com/fgrehm/vagrant-lxc/compare/v1.0.0...v1.0.1) (Oct 15, 2014)
 

lib/vagrant-lxc/plugin.rb

@@ -9,7 +9,7 @@ module Vagrant
       LXC-based virtual machines.
       EOF
 
-      provider(:lxc, parallel: true) do
+      provider(:lxc, parallel: true, priority: 7) do
         require File.expand_path("../provider", __FILE__)
 
         I18n.load_path << File.expand_path(File.dirname(__FILE__) + '/../../locales/en.yml')