fix env variables as per changes in the otel spec

[vvydier]

1. Changed the env variable to OTEL_RESOURCE_ATTRIBUTES as per the spec https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/sdk.md#specifying-resource-information-via-an-environment-variable
2. Changing the environment variables to TRACEPARENT and TRACESTATE for inter-process propagation Environment Variables as Carrier for Inter-Process Propagation to transport context opentelemetry-specification#740

[bryce-b]

the link for TRACEPARENT & TRACESTATE goes to a git ignore update pr. can you link the intended spec doc? I was having issues finding it

[vvydier]

the link for TRACEPARENT & TRACESTATE goes to a git ignore update pr. can you link the intended spec doc? I was having issues finding it

I had the incorrect link in my comment, meant to link issue#740 (not 74)

[nachoBonafonte]

My only concern with the change as it is, is that it implies a breaking change is someone is using any of those environment variables already. Should we add support for both naming or should we go further and modify the minor version in the next release?

[vvydier]

My only concern with the change as it is, is that it implies a breaking change is someone is using any of those environment variables already. Should we add support for both naming or should we go further and modify the minor version in the next release?

I vote for your second option to modify the minor version number for the next release. I think it's simpler to keep in sync with the spec than carrying over older environment variables.

[nachoBonafonte]

Ok, works for me