Consistency for configuration for distros

[codeboten]

Configuration is in different places for the different distros:

# contrib
/etc/otelcol-contrib/config.yaml
# core
/etc/otelcol/config.yaml
# k8s distro
No conf

It would be great to have it be consistent

[mx-psi]

This was intentional https://github.com/open-telemetry/opentelemetry-collector-releases/issues/59#issuecomment-1014451868

I don't like having a default config because:

• It leads to a silent failure (using the default config) if you get the command wrong/mount the config in the wrong place
• The default config is not useful outside of a demo, it just uses the debug exporter. Additionally, I don't think any config would be helpful, we can't really predict users use case here

Although removing the default config is a breaking change, the blast radius is probably going to be more reduced (at least if we keep the entrypoint as is), since most people are not using the default configuration

[TylerHelmuth]

I agree on removing default config

[jpkrohling]

I'm also in favor of removing the default config.

It leads to a silent failure (using the default config) if you get the command wrong/mount the config in the wrong place

I've seen this many times as well.