Fix config_template to work with Ansible 2.6

In Ansible 2.6 the copy module now recognizes the "_original_basename"
option and not the "original_basename" option. In order for this module
to work with versions less than 2.6.0 and 2.6.0+ we need to allow an if
statement based on the version of Ansible being used.

Change-Id: I3f7a12dec77ea6e8e3c9fcae6ce9c162df57e50c

action/config_template.py

@@ -39,6 +39,8 @@
 from ansible import constants as C
 from ansible import errors
 from ansible.parsing.yaml.dumper import AnsibleDumper
+from distutils.version import LooseVersion
+from ansible import __version__ as __ansible_version__
 
 __metaclass__ = type
 
@@ -654,14 +656,24 @@ def run(self, tmp=None, task_vars=None):
             self._connection._shell.join_path(tmp, 'source'),
             resultant
         )
-        new_module_args.update(
-            dict(
-                src=transferred_data,
-                dest=_vars['dest'],
-                original_basename=os.path.basename(source),
-                follow=True,
-            ),
-        )
+        if LooseVersion(__ansible_version__) < LooseVersion("2.6"):
+            new_module_args.update(
+                dict(
+                    src=transferred_data,
+                    dest=_vars['dest'],
+                    original_basename=os.path.basename(source),
+                    follow=True,
+                ),
+            )
+        else:
+            new_module_args.update(
+                dict(
+                    src=transferred_data,
+                    dest=_vars['dest'],
+                    _original_basename=os.path.basename(source),
+                    follow=True,
+                ),
+            )
 
         # Remove data types that are not available to the copy module
         new_module_args.pop('config_overrides', None)