Add python3-compat boilerplate to all .py files in lib/ansible

lib/ansible/utils/cmd_functions.py

@@ -14,7 +14,9 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
-from __future__ import absolute_import
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
 
 import os
 import sys