build(travis): make sauce connect process query a bit more specific

Author: IgorMinar

scripts/sauce/sauce_connect_teardown.sh

@@ -7,7 +7,7 @@ echo "Shutting down Sauce Connect tunnel"
 
 killall sc
 
-while [[ -n `ps -ef | grep "bin/sc" | grep -v "grep"` ]]; do
+while [[ -n `ps -ef | grep "sauce-connect-" | grep -v "grep"` ]]; do
  printf "."
  sleep .5
 done