Testing of subdomains before the module will work

Thanks for this module, it works great. I wanted to share my use case so perhaps it would be better supported in the future.

For the site we run subdomain on, we can not add a wildcard record because the company uses other subdomains for different applications. We only use one subdomain with this module.

In order to use subdomain, we had to add the 4 different test subdomains to our DNS records.

It would be nice if there was a manual override, or a custom test subdomain you could enter so you wouldn't have to tweak the domain DNS settings so much if you aren't using a wildcard.