This will allow us to force SSL connections to the database in
production by setting two values:
- PGSSLMODE should be set to "verify-full". This forces the client to
verify the server against a known CA: https://www.postgresql.org/docs/10/libpq-ssl.html
- PGSSLROOTCERT should be set to the path of the public cert for the
relevant CA.
When the database connection is made, these values are passed to the
adapter. For local development, PGSSLMODE is set to "prefer" and
PGSSLROOTCERT is left unset.
Kubernetes config has been added to maintain the root CAs for both Azure
and AWS as k8s ConfigMap objects. These are mounted into the containers
and referenced by PGSSLROOTCERT in the container environment.
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