One should be able to change ovs port type if its not virtual.

If ovs port is virtual, we use OVSIntPort to create it.
Otherwise it should be OVSPort.
I've added new key: ovs_port_type to not intersect with current
deployments and not hurt anyone.

I've updated doc to have an example of ovs peering patch.
Customer-Found

Change-Id: Ieddb5fcc02d410c3cc14c89737992690cb5f3975
diff --git a/tests/pillar/network_openvswitch_dpdk.sls b/tests/pillar/network_openvswitch_dpdk.sls
index 73623d6..fa96cb9 100644
--- a/tests/pillar/network_openvswitch_dpdk.sls
+++ b/tests/pillar/network_openvswitch_dpdk.sls
@@ -39,3 +39,11 @@
       br-prv:
         enabled: true
         type: dpdk_ovs_bridge
+      dummy0:
+        enabled: true
+        name: dummy0
+        proto: manual
+        ovs_port_type: OVSIntPort
+        type: ovs_port
+        ovs_bridge: br-prv
+        bridge: br-prv