[VOL-4327] Updated Check Ping keyword to send 30 packets and Check Ping Result keyword to accept upto 4% packet loss

Change-Id: I69b82024da573d9ae51784cfd9522c56f1a029de
diff --git a/Makefile b/Makefile
index b10a4ea..a2b237d 100644
--- a/Makefile
+++ b/Makefile
@@ -142,5 +142,5 @@
 	find . -name output.xml -print
 
 clean-all: clean
-	rm -rf venv_cord gendocs cord-robot/CORDRobot/VERSION cord-robot/dist/*
+	rm -rf vst_venv venv_cord gendocs cord-robot/CORDRobot/VERSION cord-robot/dist/*