Fixing APIKeyValidationInfoDTO in thrift to adhere with changes done in r177051

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@179297 a5903396-d722-0410-b921-86c7d4935375
Fxing a minor bug

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@179298 a5903396-d722-0410-b921-86c7d4935375