Ensure playbook support for su params

lib/ansible/playbook/play.py

@@ -43,7 +43,8 @@ class Play(object):
        'hosts', 'name', 'vars', 'vars_prompt', 'vars_files',
        'tasks', 'handlers', 'remote_user', 'user', 'port', 'include', 'accelerate', 'accelerate_port', 'accelerate_ipv6',
        'sudo', 'sudo_user', 'connection', 'tags', 'gather_facts', 'serial',
-       'any_errors_fatal', 'roles', 'pre_tasks', 'post_tasks', 'max_fail_percentage' 
+       'any_errors_fatal', 'roles', 'pre_tasks', 'post_tasks', 'max_fail_percentage',
+       'su', 'su_user'
     ]
 
     # *************************************************

lib/ansible/playbook/task.py

@@ -40,7 +40,8 @@ class Task(object):
          'first_available_file', 'include', 'tags', 'register', 'ignore_errors',
          'delegate_to', 'local_action', 'transport', 'remote_user', 'sudo', 'sudo_user',
          'sudo_pass', 'when', 'connection', 'environment', 'args',
-         'any_errors_fatal', 'changed_when', 'failed_when', 'always_run', 'delay', 'retries', 'until'
+         'any_errors_fatal', 'changed_when', 'failed_when', 'always_run', 'delay', 'retries', 'until',
+         'su', 'su_user', 'su_pass'
     ]
 
     def __init__(self, play, ds, module_vars=None, default_vars=None, additional_conditions=None, role_name=None):