Allow custom local hostnames for Opti ID CMS integration

Currently, in order to test Opti ID integration with Optimizely CMS in a local development environment, you must use https://localhost:5000 as the host URL. Custom hostnames are not allowed, and you will get an error message back from Opti ID if you try to use a custom URL.

For local development, we often set our sites up in IIS using the hostname format "sitename.local". However, when using Opti ID, we are stuck with using localhost:5000. If we were to have multiple sites using Opti ID, this could cause conflicts, since every site would need to use localhost:5000.

It would be great if we had the ability to whitelist custom local hostnames for use with Opti ID. Or, at the very least, to allow a range of port numbers so that every site does not need to use port 5000. This would be more flexible and less disruptive to our local site setup process. Thanks!