wip: p4 code and setup script

src/tests/hackfest3/p4/main.p4

@@ -207,7 +207,7 @@ control EgressPipeImpl (inout parsed_headers_t hdr,
         // invalid elements are
         hdr.int_headers[0].setValid();
         hdr.int_headers[0].switch_id = (bit<13>)swid;
-        hdr.int_headers[0].queue_depth = (bit<13>)standard_metadata.deq_qdepth;
+        hdr.int_headers[0].queue_depth = (bit<13>)standard_metadata.deq_timedelta;
         hdr.int_headers[0].output_port = (bit<6>)standard_metadata.egress_port;
 
         //update ip header length

src/tests/hackfest3/setup.sh

@@ -16,6 +16,7 @@
 
 export POD_NAME=$(kubectl get pods -n=tfs | grep device | awk '{print $1}')
 
+kubectl exec ${POD_NAME} -n=tfs -c=server -- rm -rf /root/p4
 kubectl exec ${POD_NAME} -n=tfs -c=server -- mkdir /root/p4
 
 kubectl cp src/tests/hackfest3/p4/p4info.txt tfs/${POD_NAME}:/root/p4 -c=server