@tchaton here is the PR based on our conversations in #91. I realized that there are several other objects that used _DistributedEnv, so decided not to go down the route of passing _DistributedEnv as an optional argument. Instead, I went with adding environment variables that can override the detected vars.

Two things regarding this PR's precheck.

1. I couldn't find a Contributor guideline file, is this signifcantly different than the lightning contributer guideline file?
2. I didn't find a lot of documentation worth updating, but if you know of any documentation relevant here, I would be happy to update.

Codecov Report

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