edge case where domain does not point to project

[gregsadetsky]

repro:

• deploy new project + provide a domain that's incorrect (i.e. it does not point to the machine)
• there will be letsencrypt errors
• remove the domain
• add a new domain, this one correctly pointing to the project
• if you go to the new domain, you will only see {"disco": true} i.e. you will see the same result as if accessing the disco server's url
• trigger a new deployment by git pushing (even an empty commit)
• the new domain will now correctly point to the project

for context, this is a "type": "generator" project