Update module_utils "import" to the new-style

Fixes #505

lib/ansible/modules/extras/network/f5/bigip_facts.py

@@ -1684,6 +1684,8 @@ def main():
     module.exit_json(**result)
 
 # include magic from lib/ansible/module_common.py
-#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
-main()
+from ansible.module_utils.basic import *
+
+if __name__ == '__main__':
+    main()