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/cloud/ovh/ovh_ip_loadbalancing_backend.py

@@ -1,18 +1,12 @@
 #!/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: 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': ['preview'],
                     'supported_by': 'community'}
@@ -113,6 +107,7 @@ RETURN = '''
 '''
 
 import time
+
 try:
     import ovh
     import ovh.exceptions
@@ -121,6 +116,9 @@ try:
 except ImportError:
     HAS_OVH = False
 
+from ansible.module_utils.basic import AnsibleModule
+
+
 def getOvhClient(ansibleModule):
     endpoint = ansibleModule.params.get('endpoint')
     application_key = ansibleModule.params.get('application_key')
@@ -309,8 +307,6 @@ def main():
 
     module.exit_json(changed=moduleChanged)
 
-# import module snippets
-from ansible.module_utils.basic import AnsibleModule
 
 if __name__ == '__main__':
     main()