Enable running tests on a persistant network setup

- Doesn't setup  or teardown the control or data planes
- Increase timeout for reading scapy packets

TODO:
- Add to all params files for qa pod
- Update tofino switch driver
- Test on other test suites

Change-Id: I8de8e10205b508fd7cd7fb49fc7715369dab5fb0
(cherry picked from commit bb1e6baec7126ca99240bab1e45622eec037021b)
diff --git a/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.params.tofino b/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.params.tofino
index fc89308..7442bf4 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.params.tofino
+++ b/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.params.tofino
@@ -25,6 +25,8 @@
 
     <jsonFileSuffix>.hw</jsonFileSuffix>
 
+    <persistent_setup>True</persistent_setup>
+
     <MN_DOCKER>
         <args>--privileged --net host --rm -v topo:/topo -v ~/mininet/custom:/home/root/mininet/custom -v /var/run/openvswitch/:/var/run/openvswitch/ -v /tmp/mn-stratum:/tmp -v /tmp/mn_conf/:/home/root/config --hostname mn-stratum -v /etc/network/interfaces:/etc/network/interfaces -it -d</args>
         <name>trellis_mininet</name>