INFRA-224 cxnapp-2: Setup letsencrypt for mycivi.org
cxnapp-2 (gcloud, 146.148.42.42) runs the backend for the "Site Profile" system, aka {{mycivi.org}} and {{dev.mycivi.org}}.
The Gandi SSL cert is set to expire circa Dec 7. Let's replace it with Letsencrypt.