[kolla-ansible] Not to install openvswitch on sriov_agent compute nodes

Folks, I have pure sriov compute nodes where I don't want to deploy openvswitch because SRIOV agents do pass through PCI bugs to VM directly. Currently all my SRIOV compute nodes have two agents running. neutron_openvswitch_agent neutron_sriov_agent I don't think "neutron_openvswitch_agent" has any role on sriov compute nodes. If I want to tell kolla-ansible not to deploy neutron_openvswitch_agent on X compute node then how do I tell. Are there any easy ways to turn it off? ~S