Use "console" encoding for own logs (#2109)
Use "console" encoding for own logs (#2109)

Resolves https://github.com/open-telemetry/opentelemetry-collector/issues/2106

Make logs more human-readable locally: switch from "json" to "console" encoding
even when "prod" logging configuration is selected (but keep Production zap
Logger configuration for "prod" mode). This is still fairly well-defined
format that can be unambiguously parse on the backend if needed.
open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector