I also like openvswitch.
My configuration with mitaka ...
in controller node:
https://github.com/paradigmadigital/ansible-openstack-vcenter/blob/develop/etc_ansible/roles/networking-compute-controller/templates/ml2_conf.ini.j2
[1]
https://github.com/paradigmadigital/ansible-openstack-vce
I also like openvswitch.
My configuration with mitaka ...
in controller node:
https://github.com/paradigmadigital/ansible-openstack-vcenter/blob/develop/etc_ansible/roles/networking-compute-controller/templates/ml2_conf.ini.j2
[1]
https://github.com/paradigmadigital/ansible-openstack-vce