(#9383) File path expand all chef_zero config path options

This commit ensures that all paths are properly file path expanded for
each config option in chef_zero.

plugins/provisioners/chef/config/chef_zero.rb

@@ -120,7 +120,7 @@ module VagrantPlugins
 
           # Make sure all the paths are in the proper format
           config.map do |path|
-            path = [:host, path] if !path.is_a?(Array)
+            path = [:host, File.expand_path(path)] if !path.is_a?(Array)
             path
           end
         end