os_subnet does not work with latest versions of ansible, and linchpin

[samvarankashyap]

Describe the bug
os_subnet does not work with latest verisons of ansible
To Reproduce
Steps to reproduce the behavior:

1. provision os_subnet on openstack workspace in example

Expected behavior
Logs

==== TEST: fedora30/openstack/08_os_subnet ====

• DISTRO=fedora30
• PROVIDER=openstack
• TARGET=os-subnet
  ++ mktemp
• TMP_FILE=/tmp/tmp.910Kk8onYN
• trap clean_up EXIT SIGHUP SIGINT SIGTERM
• pushd docs/source/examples/workspaces/openstack
  /workDir/workspace/ci-linchpin/linchpin/docs/source/examples/workspaces/openstack /workDir/workspace/ci-linchpin/linchpin
• linchpin -w . -v up os-subnet
  [WARNING]: Unable to parse /workDir/workspace/ci-
  linchpin/linchpin/docs/source/examples/workspaces/openstack/localhost as an
  inventory source
  [WARNING]: No inventory was parsed, only implicit localhost is available

PLAY [schema check and Pre Provisioning Activities on topology_file] ***********

TASK [common : assign async value] *********************************************
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [common : declare async_types array] **************************************
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [common : output vars] ****************************************************
ok: [localhost] => {"ansible_facts": {"topology_outputs": []}, "changed": false}

PLAY [Provisioning resources based on resource group type] *********************

TASK [Gathering Facts] *********************************************************
ok: [localhost]

TASK [openstack : Create name using uhash value] *******************************
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [openstack : provision/teardown resources] ********************************
included: /usr/lib/python2.7/site-packages/linchpin/provision/roles/openstack/tasks/provision_os_network.yml for localhost

TASK [openstack : provision/deprovision os_network] ****************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TypeError: create_network() got an unexpected keyword argument 'dns_domain'
fatal: [localhost]: FAILED! => {"changed": false, "module_stderr": "Traceback (most recent call last):\n File "/root/.ansible/tmp/ansible-tmp-1572967516.7-76663754478089/AnsiballZ_os_network.py", line 102, in \n _ansiballz_main()\n File "/root/.ansible/tmp/ansible-tmp-1572967516.7-76663754478089/AnsiballZ_os_network.py", line 94, in _ansiballz_main\n invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\n File "/root/.ansible/tmp/ansible-tmp-1572967516.7-76663754478089/AnsiballZ_os_network.py", line 40, in invoke_module\n runpy.run_module(mod_name='ansible.modules.cloud.openstack.os_network', init_globals=None, run_name='main', alter_sys=False)\n File "/usr/lib64/python2.7/runpy.py", line 192, in run_module\n fname, loader, pkg_name)\n File "/usr/lib64/python2.7/runpy.py", line 72, in _run_code\n exec code in run_globals\n File "/tmp/ansible_os_network_payload_9BoDbo/ansible_os_network_payload.zip/ansible/modules/cloud/openstack/os_network.py", line 255, in \n File "/tmp/ansible_os_network_payload_9BoDbo/ansible_os_network_payload.zip/ansible/modules/cloud/openstack/os_network.py", line 237, in main\nTypeError: create_network() got an unexpected keyword argument 'dns_domain'\n", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}

PLAY RECAP *********************************************************************
localhost : ok=13 changed=1 unreachable=0 failed=1 skipped=7 rescued=0 ignored=0

Unsuccessful provision of resource

[samvarankashyap]

Unable to reproduce the error locally.
However, the use case is invalidated by the mocking the data and updating the ci.