what changes packstack answer file need when we move from ovs to ovs-dpdk

Question

I am not able to find anything related to packstack answer file. Lets says in normal ovs , eno2 and eno3 were mapped to physnet1 but now I am using above ports with below conf:

ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
ovs-vsctl add-port br0 eno2 -- set Interface eno2 type=dpdk options:dpdk-devargs=0000:02:00.1
ovs-vsctl add-port br0 eno3 -- set Interface eno3 type=dpdk options:dpdk-devargs=0000:02:00.2

How to do I proceed ahead with answer file ?

Can I keep it same and same way configure network on physnet1 ?

BTW, I have installed and enabled ovs-dpdk on compute m/c but havent done any change in controller, do I need any change there also ? My controller node is showing compute node status as down after compute node upgrade/conf to ovs-dpdk. Though it is able to ping it. I restarted rabbitmq-server also but that didn't help.

If no change in controller, then How Can I associate above created bridge to Vm instance as those cmd ie openstack server add port needs to be executed in controller. Looks like I am missing on reading fully on ovs-dpdk usage.