R4.1[Juju charms] Neutron not able to connect to contrail-api

Issue:

Openstack services ( neutron and others running on the subnet 192.168.11.0) trying to connect to contrail-api over control_data subnet(192.168.31.0).

In R4.1, we have an option control_data_interface to enable control_node provisioning over control data while non control services still running on mgmnt (api) subnet allowing openstack services to talk. Not sure if an equivalent option is available in juju charms. If not, this looks like a provisioning issue.

After specifying control_network:192.168.31.0 in juju bundle, all contrail services start running on control_data subnet ( 192.168.31.0). Note that openstack services running on api (mgmnt) subnet 192.168.11.0 causing to fail to reach to contrail-api.

Logs:

All the services in the control controller start using the same subnet (i.e. 192.168.31.0) . Because of this , I see the openstack services fail to connect to the contrail services. See below:

2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource response = requests.post(url, data=data, headers=headers)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource File "/usr/lib/python2.7/dist-packages/requests/api.py", line 110, in post
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource return request('post', url, data=data, json=json, **kwargs)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource File "/usr/lib/python2.7/dist-packages/requests/api.py", line 56, in request
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource return session.request(method=method, url=url, **kwargs)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 488, in request
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource resp = self.send(prep, **send_kwargs)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 609, in send
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource r = adapter.send(request, **kwargs)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 487, in send
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource raise ConnectionError(e, request=request)
2018-09-30 19:25:58.534 1697 ERROR neutron.api.v2.resource ConnectionError: HTTPConnectionPool(host='192.168.31.1', port=8082): Max retries exceeded with url: /neutron/network (Caused by NewConnectionError('<req