fixed, case insensitive matching

lxc version: 1.0.0.alpha3
$ sudo lxc-info -n test_default-1387877096
Name:           test_default-1387877096
State:          RUNNING
....

lib/vagrant-lxc/driver/cli.rb

@@ -38,7 +38,7 @@ module Vagrant
         end
 
         def state
-          if @name && run(:info, '--name', @name, retryable: true) =~ /^state:[^A-Z]+([A-Z]+)$/
+          if @name && run(:info, '--name', @name, retryable: true) =~ /^state:[^A-Z]+([A-Z]+)$/i
             $1.downcase.to_sym
           elsif @name
             :unknown