Add latest updates from FTD Ansible downstream repository. (#53638)

* Add latest updates from FTD Ansible downstream repository.
 - add a better implementation of the upsert operation;
 - add API version lookup functionality;
 - add filter which remove duplicated references from the list of references;
 - fix minor bugs.

* fix issues outlined by ansibot

* fix argument name for _check_enum_method

test/units/modules/network/ftd/test_ftd_configuration.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Cisco and/or its affiliates.
+# Copyright (c) 2018-2019 Cisco and/or its affiliates.
 #
 # This file is part of Ansible
 #
@@ -105,10 +105,10 @@ class TestFtdConfiguration(object):
 
     def test_module_should_run_successful(self, resource_mock):
         operation_name = 'test name'
-        resource_mock.return_value = 'ok'
+        resource_mock.return_value = {'result': 'ok'}
 
         result = self._run_module({'operation': operation_name})
-        assert result['response'] == 'ok'
+        assert result['response'] == {'result': 'ok'}
 
     def _run_module(self, module_args):
         set_module_args(module_args)

test/units/modules/network/ftd/test_ftd_file_upload.py

@@ -1,31 +1,13 @@
-# Copyright (c) 2018 Cisco and/or its affiliates.
-#
-# 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/>.
-#
-
 from __future__ import absolute_import
 
 import pytest
-
 from ansible.module_utils import basic
-from ansible.module_utils.network.ftd.common import HTTPMethod
-from ansible.module_utils.network.ftd.fdm_swagger_client import OperationField
-from ansible.modules.network.ftd import ftd_file_upload
 from units.modules.utils import set_module_args, exit_json, fail_json, AnsibleFailJson, AnsibleExitJson
 
+from ansible.modules.network.ftd import ftd_file_upload
+from ansible.module_utils.network.ftd.fdm_swagger_client import OperationField
+from ansible.module_utils.network.ftd.common import HTTPMethod
+
 
 class TestFtdFileUpload(object):
     module = ftd_file_upload