Use 0oNNN octal syntax

This syntax is valid in Python 2.6+ and 3.x.

lib/ansible/plugins/action/__init__.py

@@ -166,7 +166,7 @@ class ActionBase:
 
         tmp_mode = None
         if self._play_context.remote_user != 'root' or self._play_context.become and self._play_context.become_user != 'root':
-            tmp_mode = 0755
+            tmp_mode = 0o755
 
         cmd = self._connection._shell.mkdtemp(basefile, use_system_tmp, tmp_mode)
         self._display.debug("executing _low_level_execute_command to create the tmp path")

lib/ansible/plugins/shell/sh.py

@@ -70,7 +70,7 @@ class ShellModule(object):
         # change the umask in a subshell to achieve the desired mode
         # also for directories created with `mkdir -p`
         if mode:
-            tmp_umask = 0777 & ~mode
+            tmp_umask = 0o777 & ~mode
             cmd = '(umask %o && %s)' % (tmp_umask, cmd)
 
         return cmd