make successKey null at BE

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180917 a5903396-d722-0410-b921-86c7d4935375
fixing compilation failure

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180918 a5903396-d722-0410-b921-86c7d4935375
fix for issue IDENTITY-1544

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180920 a5903396-d722-0410-b921-86c7d4935375
Code refactor with standard property names

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180921 a5903396-d722-0410-b921-86c7d4935375