Allows defining a domain name pointing at caucase's IP, and a custom port
pointing at whatever port caucase is being made available on to all
services and users. This makes it possible to change caucased's IP address
without having to reissue all certificates when certificate-validating
library given a caucased-issued certificate tries to access the CRL
distriution point.
software/caucase still pusblishes the plain IP & port allocated by slapos.