Fix missing import and boilerplate

Added fix for missing imports and boilerplate in files modules,
also, removed get_exception calls to match 2.6> exception handling.

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/modules/files/stat.py

@@ -1,18 +1,9 @@
 #!/usr/bin/python
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+# Copyright: (c) 2017, Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
 
 ANSIBLE_METADATA = {'metadata_version': '1.0',
                     'status': ['stableinterface'],
@@ -372,7 +363,6 @@ import stat
 
 # import module snippets
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.pycompat24 import get_exception
 from ansible.module_utils._text import to_bytes
 
 
@@ -469,8 +459,7 @@ def main():
             st = os.stat(b_path)
         else:
             st = os.lstat(b_path)
-    except OSError:
-        e = get_exception()
+    except OSError as e:
         if e.errno == errno.ENOENT:
             output = {'exists': False}
             module.exit_json(changed=False, stat=output)