adding securevault back


git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@154247 a5903396-d722-0410-b921-86c7d4935375
copy secure-vault

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@154248 a5903396-d722-0410-b921-86c7d4935375