CLOUDSTACK-7989: Ignore Auth API calls in unauthenticated HTTP handlers

If an auth API call (such as login, logout) is called on unauthenticated port
such as the 8096 integration server port, we need to ignore such API calls
as calling auth APIs on 8096 is un-necessary and is undefined.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>