Remove wildcard imports

Made the following changes:

* Removed wildcard imports
* Replaced long form of GPL header with short form
* Removed get_exception usage
* Added from __future__ boilerplate
  * Adjust division operator to // where necessary

For the following files:

* web_infrastructure modules
* system modules
* linode, lxc, lxd, atomic, cloudscale, dimensiondata, ovh, packet,
  profitbricks, pubnub, smartos, softlayer, univention modules
* compat dirs (disabled as its used intentionally)

lib/ansible/modules/system/group.py

@@ -2,21 +2,11 @@
 # -*- coding: utf-8 -*-
 
 # (c) 2012, Stephen Fromm <sfromm@gmail.com>
-#
-# 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/>.
+# 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'],
@@ -66,7 +56,9 @@ EXAMPLES = '''
 '''
 
 import grp
-import platform
+
+from ansible.module_utils.basic import AnsibleModule, load_platform_subclass
+
 
 class Group(object):
     """
@@ -355,7 +347,6 @@ class OpenBsdGroup(Group):
     def group_mod(self, **kwargs):
         cmd = [self.module.get_bin_path('groupmod', True)]
         info = self.group_info()
-        cmd_len = len(cmd)
         if self.gid is not None and int(self.gid) != info[2]:
             cmd.append('-g')
             cmd.append('%d' % int(self.gid))
@@ -397,7 +388,6 @@ class NetBsdGroup(Group):
     def group_mod(self, **kwargs):
         cmd = [self.module.get_bin_path('groupmod', True)]
         info = self.group_info()
-        cmd_len = len(cmd)
         if self.gid is not None and int(self.gid) != info[2]:
             cmd.append('-g')
             cmd.append('%d' % int(self.gid))
@@ -471,8 +461,6 @@ def main():
 
     module.exit_json(**result)
 
-# import module snippets
-from ansible.module_utils.basic import *
 
 if __name__ == '__main__':
     main()