Providing feedback on the missing env variables related to the local tracing push config

[staheri14]

          In the case of setting 4 environment variables, but forgetting the fifth, this will consider the env variables not set at all. Do we want this? Or we want to account for the case where if any of the env variables is set, we return an error telling the user to pass the rest correctly or remove the one that's set?

I don't know how this will be used, if it's just a temporary functionality for testing or will long live in the repo, so won't block on this.

Originally posted by @rach-id in #1318 (comment)