Jorge Diz Pico

Do not override private repo urls with default CDN

2

**Summary:** Packages in hex repos defined in rebar.config cannot be fetched as their URL is always overriden. **Environment**: detected in Erlang 23.0.3 + rebar 3.14.1, but most surely happening in...

Running elvis on a rebar.config.script such as: ``` Vsn = 3. [{minimum_otp_vsn, Vsn}]. ``` throws an `unbound_var` exception on `Vsn`. Changing the period to a comma works around it, though...

Instead of setting what db module to use in the start arguments, it's done through an env setting so it can be easily changed through `set_env` (e.g. when using `application:start`...