Adding an STC scenario for fabric.p4

Change-Id: I3457ab67c2c97eab73623500ba3f6a75b9ed33a3
diff --git a/tools/test/scenarios/bin/set-up-trellis b/tools/test/scenarios/bin/set-up-trellis
new file mode 100755
index 0000000..03dc23d
--- /dev/null
+++ b/tools/test/scenarios/bin/set-up-trellis
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+remote=$ONOS_USER@$OCN
+
+ssh -t $remote "
+
+    set -euxo pipefail
+
+    sudo killall -9 dhclient || true
+    sudo killall -9 zebra || true
+    sudo killall -9 bgpd || true
+    sudo killall -9 dhcpd || true
+    sudo killall -9 screen || true
+
+    # Preconfigure isc-dhcp-relay for headless install
+    echo isc-dhcp-relay isc-dhcp-relay/interfaces string "" | sudo debconf-set-selections
+    echo isc-dhcp-relay isc-dhcp-relay/options string "" | sudo debconf-set-selections
+    echo isc-dhcp-relay isc-dhcp-relay/servers string "" | sudo debconf-set-selections
+"
\ No newline at end of file