* updates on robot accounts
1, add patch method to refresh secret of a robot
2, fix robot account update issue
3, add editable attribute to handle the version 1 robot account
4, add duration for robot account
5, hide secret for get/list robot account
Signed-off-by: wang yan <wangyan@vmware.com>
* update code per review comments
1, change expirate creation func to AddDate().
2, remove the scanner duration specification, use the default value.
Signed-off-by: Wang Yan <wangyan@vmware.com>