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/storage/netapp/netapp_e_facts.py

@@ -1,22 +1,12 @@
 #!/usr/bin/python
 
 # (c) 2016, NetApp, Inc
-#
-# 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': ['preview'],
                     'supported_by': 'community'}
@@ -75,7 +65,8 @@ msg:
 import json
 
 from ansible.module_utils.api import basic_auth_argument_spec
-from ansible.module_utils.basic import AnsibleModule, get_exception
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils._text import to_native
 from ansible.module_utils.urls import open_url
 from ansible.module_utils.six.moves.urllib.error import HTTPError
 
@@ -88,9 +79,8 @@ def request(url, data=None, headers=None, method='GET', use_proxy=True,
                      force=force, last_mod_time=last_mod_time, timeout=timeout, validate_certs=validate_certs,
                      url_username=url_username, url_password=url_password, http_agent=http_agent,
                      force_basic_auth=force_basic_auth)
-    except HTTPError:
-        err = get_exception()
-        r = err.fp
+    except HTTPError as e:
+        r = e.fp
 
     try:
         raw_data = r.read()
@@ -141,10 +131,9 @@ def main():
         (rc, resp) = request(api_url + "/storage-systems/%s/graph" % ssid,
                              headers=dict(Accept="application/json"),
                              url_username=api_usr, url_password=api_pwd, validate_certs=validate_certs)
-    except:
-        error = get_exception()
+    except Exception as e:
         module.fail_json(
-            msg="Failed to obtain facts from storage array with id [%s]. Error [%s]" % (ssid, str(error)))
+            msg="Failed to obtain facts from storage array with id [%s]. Error [%s]" % (ssid, to_native(e)))
 
     facts['snapshot_images'] = [
         dict(