remove loadgen_SB.sh shell script, use loadgen_SB.py for SouthBound load generation
diff --git a/TestON/dependencies/loadgen_SB.sh b/TestON/dependencies/loadgen_SB.sh
deleted file mode 100755
index 41b12fd..0000000
--- a/TestON/dependencies/loadgen_SB.sh
+++ /dev/null
@@ -1,153 +0,0 @@
-#!/bin/bash
-'''
-This is the southbound load generator to generator topology events for tests, such as scale-out and performance testing. 
-Example command: ./loadgen_SB.sh startload "1.1.1.1:6633 2.2.2.2:6633" 100 4 100 300 11 - will have 100 switches RR connection to the list of controllers. There will be 4 dataplane ports per switch; switch connection rate (aggregated) is 100 switch/second; duration is 300 seconds; "11" is used as part of the dpid to distinguish switch generated from multiple instances of this generator. Switch disconnnect will use "127.0.0.1:10000" as its connection." 
-'''
-
-case "$1" in
-	addsw)
-		numsw=$2
-		;;
-	delsw)
-		numsw=$2
-        ;;
-    startload)
-		list_ctrl=$2;numsw=$3;numport=$4;rate=$5;duration=$6;prefix_dpid=$7
-        sleeptimer=$(echo "scale=4; (1/$rate)"|bc)
-        ;;
-    chksw)
-		numsw=$2
-        ;;
-    *)
-        #echo "Enter action:"
-        #echo "addsw number_switches - addsw 200"
-        #echo "delsw number_switches - delsw 200"
-        echo "startload list of controllers numsw numportPerSW rate(#/s) duration(s) dpid_prefix - startload "1.1.1.1 2.2.2.2 3.3.3.3" 100 4 10 300 11  #switches will be evenly spread to those controllers"
-		echo "prefix_dpid is the first two octect of dpid in hex, such as "11", or "aa"."
-		echo "This command will first add numb_of_switches to OVSDB; then generate the load as configured; when finished, delete all switches from OVSDB."
-        #echo "chsw num_switches - chsw 200 #get all switches and their current controller connection"
-        exit 1
-esac
-
-add-ovs () 
-{
-	for ((i=1;i<=$numsw;i++))
-    	do      
-    		str=$(printf '%014X' $i); dpid=$prefix_dpid$str
-			echo "adding ovs switch s$i"
-        	sudo ovs-vsctl add-br "s"$i
-			sudo ovs-vsctl set bridge "s"$i other-config:datapath-id=$dpid
-            
-            #echo "adding $numport dataplane ports to switch s$i ... "
-			for ((p=1; p<=$numport; p++))
-				do
-				echo "adding port $p to switch s$i ... "
-				sudo ovs-vsctl add-port "s"$i "s"$i"p"$p
-            done
-	done
-}
-
-del-ovs () 
-{
-	for ((i=1;i<=$numsw;i++))
-        do
-                #echo "deleting ovs switch s$i"
-                sudo ovs-vsctl del-br "s"$i 
-        done
-}
-
-conn-ovs () 
-{
-	i=1
-	while (($i<=$numsw)) 
-	do 
-		for ctrl_port in ${list_ctrl[@]}
-		do
-			if (($i!=0))
-			then
-				#ovsctrl="tcp:"$ctrl_port
-				#echo  "s"$i
-				sudo ovs-vsctl --no-wait --no-syslog set-controller "s"$i "tcp:"$ctrl_port & 
-				let i+=1
-				sleep $sleeptimer
-			fi
-		done
-	done
-}
-
-disconn-ovs () 
-{
-	i=1
-    while (($i<=$numsw)) 
-    do
-		ovsctrl="tcp:127.0.0.1:10000"
-        #echo  "s"$i
-        sudo ovs-vsctl --no-wait set-controller "s"$i $ovsctrl &
-        let i+=1
-        sleep $sleeptimer
-    done
-}
-
-get-ovs ()
-{
-    i=$numsw
-    while (($i>0)) 
-    do
-        echo "s"$i
-		sudo ovs-vsctl get-controller "s"$i
-        let i-=1
-    done
-
-}
-
-loadsw ()
-{
-	echo "adding $numsw ovs switches..."
-	add-ovs
-
-	echo "starting to generate south bound load ...."
-    	let "roundtime = numsw / rate"
-	#let "iter = duration / roundtime / 2 "
-    iter=1
-	echo "Running load for $duration seconds..."
-    start=$(date +%s )
-	time while [[ $(( $(date +%s) - start )) -lt $duration ]]
-    do
-		#echo "start time is: $start"
-		#echo "current time is: $(date +%s)"
-  		#echo "diff is: $(($(date +%s) - $start ))"
-		time conn-ovs; echo "Number of switches connected: $numsw. Events generated: $(( ($numport + 2) * $numsw )) - each switch added generates one switch event, one default port event, and $numport dataplane port events."
-		time disconn-ovs; echo "Number of switches disconnected: $numsw. Events generated: $(( ($numport + 2) * $numsw )) - each switch added generates one switch event, one default port event, and $numport dataplane port events."
-		let "iter = iter + 1"
-	done
-    echo "Iteration is: $iter"
-	let "total = (( iter * numsw * (numport + 2))) "
-	echo "************************** "
-    echo "Total number of switches connected/disconnected: $(( iter * numsw * 2 )). Total events generated: $(( 2 * total)) - each switch added generates one switch event, one default port event, and $numport dataplane port events."
-	echo "**************************"
-	echo ""
-	echo "deleting $numsw ovs switches ..."
-	del-ovs
-}
-
-case "$1" in
-    addsw)
-        time add-ovs
-        ;;
-    delsw)
-        time del-ovs
-        ;;
-    startload)
-		echo $sleeptimer
-        time loadsw
-        ;;
-    chksw)
-        time get-ovs
-        ;;
-    #*)    
-    #exit 1
-esac
-
-
-
-