Update powerwall.sh

powerwall.sh

@@ -83,7 +83,7 @@ CHECKTEMP_SERVICE(){
 						done
 						for ESXIHOST in "${MAINHOSTS[@]}"; do
 							echo -en "Waiting for Host (${ESXIHOST}) to shutdown... "
-						    while ping -qw 10 -c3 "${ESXIHOST}"; do
+						    while ping -qw 10 -c3 "${ESXIHOST}">/dev/null 2>&1; do
 						      sleep 1
 						    done
 							echo "Ok"