core: Machine sets the local data path of the machine index

lib/vagrant/machine.rb

@@ -232,6 +232,7 @@ module Vagrant
         if index_uuid.nil?
           # Create the index entry and save it
           entry = MachineIndex::Entry.new
+          entry.local_data_path = @env.local_data_path
           entry.name = @name.to_s
           entry.provider = @provider_name.to_s
           entry.state = "preparing"