see if this fixes cypress issues

[ndittren]

Node 17+ changed how they resolve DNS names. Changing localhost to 127.0.0.1 is the fix for this issue

cypress-io/cypress#21430

[ndittren]

@nikolas So this gets cypress to pass but I am not sure if it's the right approach since it includes adding these hosts to the allowed list.

[nikolas]

Oh interesting! Yeah, I think this would be fine to merge - I guess an even better fix would be to only add localhost to ALLOWED_HOSTS when necessary. Maybe we can do something like this:

if 'cypress' in sys.argv:
    ALLOWED_HOSTS = ['127.0.0.1', 'localhost']

[nikolas]

Also, we don't need to overwrite our default ALLOWED_HOSTS from ccnmtlsettings: https://github.com/ccnmtl/ccnmtlsettings/blob/master/ccnmtlsettings/shared.py#L15

Maybe just adding 127.0.0.1 here is all we need to do. I've added a new commit.

If this looks good, we can just add this to our general ccnmtlsettings - well, or our new ctlsettings.