Update wso2server.sh
Update wso2server.sh

Added command line switch to  spin HDFS datanode
mcvidanagama/product-ss,mcvidanagama/product-ss,mcvidanagama/product-ss,wso2/product-ss,gnudeep/product-ss,maheshika/product-ss,maheshika/product-ss,maheshika/product-ss,wso2/product-ss,gnudeep/product-ss,mcvidanagama/product-ss,wso2/product-ss,mcvidanagama/product-ss,gnudeep/product-ss,maheshika/product-ss,gnudeep/product-ss,wso2/product-ss,gnudeep/product-ss,wso2/product-ss