Add support for additional alias domain name - portal.umccr.org

[victorskl]

Please add support for additional alias domain name - portal.umccr.org, portal.prod.umccr.org

See umccr/infrastructure#272 (comment)

[victorskl]

Please note I have refresh the ACM SSL cert to cover these additional alias domains in prod.

[raylrui]

PR for the domain alias at code side: #166,
I will have a check of the Route53 and cert, etc before merging

[raylrui]

PR merged and redirect is working.
portal.umccr.org will redirect to orcaui.umccr.org by default.
portal.prod.umccr.org still have issue. I will do more research on that ( no sure if it related to duplicate certificate for "portal.prod.umccr.org")