Add support for OTEL_LOG_LEVEL env variable

[codeboten]

The spec describes environment variables that should be supported to configure the log level, this feature request is to add support in the current implementation.

https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/sdk-environment-variables.md

[ffe4]

I'll take this up.

[codeboten]

Thanks!

[ffe4]

There is ongoing discussion about what the values for this should look like, or whether this variable should even exist right now in opentelemetry/opentelemetry-specification#920.

[github-actions]

This issue was marked stale due to lack of activity. It will be closed in 30 days.