setup my.cnf for percona mysql-server

src/modules/stack/install/ee_mod_setup_mysql.sh

@@ -5,8 +5,7 @@ function ee_mod_setup_mysql()
 	ee_lib_echo "Setting up Percona MySQL, please wait..."
 
 	# Setting wait_timeout = 30 & interactive_timeout = 60
-	grep "_timeout" /etc/mysql/my.cnf &>> $EE_COMMAND_LOG
-	if [ $? -ne 0 ]; then
-		sed -i "/#max_connections/a wait_timeout = 30 \ninteractive_timeout = 60" /etc/mysql/my.cnf
+	if [ ! -f /etc/mysql/my.cnf ]; then
+		echo  -e "[mysqld] \nwait_timeout = 30 \ninteractive_timeout = 60" &>> /etc/mysql/my.cnf
 	fi
 }