This allows an unset value for an env var to invoke
Smee's automatic IP detection to trigger. With CLI
flags this automatic IP detection doesnt work.

Signed-off-by: Jacob Weinstock <jakobweinstock@gmail.com>

Use env vars in Smee instead of CLI flags:

## Description

<!--- Please describe what this PR is going to change -->
This allows an unset value for an env variable to invoke Smee's automatic IP detection to trigger. With CLI flags this automatic IP detection doesnt work.

## Why is this needed

<!--- Link to issue you have raised -->

Fixes: #

## How Has This Been Tested?
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<!--- see how your change affects other areas of the code, etc. -->


## How are existing users impacted? What migration steps/scripts do we need?

<!--- Fixes a bug, unblocks installation, removes a component of the stack etc -->
<!--- Requires a DB migration script, etc. -->


## Checklist:

I have:

- [ ] updated the documentation and/or roadmap (if required)
- [ ] added unit or e2e tests
- [ ] provided instructions on how to upgrade