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/na_cdot_license.py

@@ -1,22 +1,12 @@
 #!/usr/bin/python
 
 # (c) 2017, 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'}
@@ -135,11 +125,13 @@ EXAMPLES = """
 RETURN = """
 
 """
+import traceback
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.pycompat24 import get_exception
+from ansible.module_utils._text import to_native
 import ansible.module_utils.netapp as netapp_utils
 
+
 HAS_NETAPP_LIB = netapp_utils.has_netapp_lib()
 
 
@@ -184,10 +176,9 @@ class NetAppCDOTLicense(object):
         try:
             result = self.server.invoke_successfully(license_status,
                                                      enable_tunneling=False)
-        except netapp_utils.zapi.NaApiError:
-            err = get_exception()
-            self.module.fail_json(msg="Error checking license status",
-                                  exception=str(err))
+        except netapp_utils.zapi.NaApiError as e:
+            self.module.fail_json(msg="Error checking license status: %s" %
+                                  to_native(e), exception=traceback.format_exc())
 
         return_dictionary = {}
         license_v2_status = result.get_child_by_name('license-v2-status')
@@ -216,10 +207,9 @@ class NetAppCDOTLicense(object):
         try:
             self.server.invoke_successfully(license_delete,
                                             enable_tunneling=False)
-        except netapp_utils.zapi.NaApiError:
-            err = get_exception()
-            self.module.fail_json(msg="Error removing license",
-                                  exception=str(err))
+        except netapp_utils.zapi.NaApiError as e:
+            self.module.fail_json(msg="Error removing license %s" %
+                                  to_native(e), exception=traceback.format_exc())
 
     def remove_unused_licenses(self):
         """
@@ -229,10 +219,9 @@ class NetAppCDOTLicense(object):
         try:
             self.server.invoke_successfully(remove_unused,
                                             enable_tunneling=False)
-        except netapp_utils.zapi.NaApiError:
-            err = get_exception()
-            self.module.fail_json(msg="Error removing unused licenses",
-                                  exception=str(err))
+        except netapp_utils.zapi.NaApiError as e:
+            self.module.fail_json(msg="Error removing unused licenses: %s" %
+                                  to_native(e), exception=traceback.format_exc())
 
     def remove_expired_licenses(self):
         """
@@ -242,10 +231,9 @@ class NetAppCDOTLicense(object):
         try:
             self.server.invoke_successfully(remove_expired,
                                             enable_tunneling=False)
-        except netapp_utils.zapi.NaApiError:
-            err = get_exception()
-            self.module.fail_json(msg="Error removing expired licenses",
-                                  exception=str(err))
+        except netapp_utils.zapi.NaApiError as e:
+            self.module.fail_json(msg="Error removing expired licenses: %s" %
+                                  to_native(e), exception=traceback.format_exc())
 
     def update_licenses(self):
         """
@@ -281,10 +269,9 @@ class NetAppCDOTLicense(object):
             try:
                 self.server.invoke_successfully(license_add,
                                                 enable_tunneling=False)
-            except netapp_utils.zapi.NaApiError:
-                err = get_exception()
-                self.module.fail_json(msg="Error adding licenses",
-                                      exception=str(err))
+            except netapp_utils.zapi.NaApiError as e:
+                self.module.fail_json(msg="Error adding licenses: %s" %
+                                      to_native(e), exception=traceback.format_exc())
 
     def apply(self):
         changed = False