Tristan Cacqueray eb9af85025 config: add environment variable substitution
This change enables setting configuration values through
environment variables. This is useful to manage user defined
configuration, such as user password, in Kubernetes deployment.

Change-Id: Iafbb63ebbb388ef3038f45fd3a929c3e7e2dc343
2020-05-20 11:44:49 +00:00
..
2020-01-14 08:25:09 -08:00