Using getResponseBodyAsStream instead of getResponseBodyAsString

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180356 a5903396-d722-0410-b921-86c7d4935375
Integrated Application Authentication Framework with the SAMLSSO Servlet

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180357 a5903396-d722-0410-b921-86c7d4935375