Adding identity-provider-mgt feature to IS

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177913 a5903396-d722-0410-b921-86c7d4935375
updating to match the user core changes

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177914 a5903396-d722-0410-b921-86c7d4935375