Add Trellis dependency into p4vm

Change-Id: Ieddb3ffa9da620ea78e4538aae02869804e2d0d1
diff --git a/tools/dev/p4vm/pre-ova-cleanup.sh b/tools/dev/p4vm/pre-ova-cleanup.sh
index 0718dd8..45c6a41 100755
--- a/tools/dev/p4vm/pre-ova-cleanup.sh
+++ b/tools/dev/p4vm/pre-ova-cleanup.sh
@@ -15,6 +15,7 @@
 sudo rm -rf ~/p4tools/sysrepo
 sudo rm -rf ~/p4tools/scapy-vxlan
 sudo rm -rf ~/p4tools/ptf
+sudo rm -rf ~/quagga
 
 sudo apt-get clean
 sudo apt-get -y autoremove