fixing api adding issue

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180406 a5903396-d722-0410-b921-86c7d4935375
Supporting securevault for new API Gateway password location

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180408 a5903396-d722-0410-b921-86c7d4935375