bitbake: toaster: clear up toaster shutdown for mac osx

This patch properly shuts down toaster in interactive mode
under Mac OSx.

(Bitbake rev: a00cd5135a4bbd61d311fa17569894f974ab4420)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/toaster

@@ -37,7 +37,7 @@ function webserverKillAll()
 			kill -SIGTERM -$(< ${pidfile}) 2>/dev/null
 			sleep 1;
 			# Kill processes if they are still running - may happen in interactive shells
-			ps fux | grep "python.*manage.py runserver" | awk '{print $2}' | xargs kill
+			pkill -U $UID -f "python.*manage.py runserver"
 		done;
 		rm  ${pidfile}
 		fi