Lead Momentum test tools fail if user already exists in Lead Momentum

[svange]

Description

Tests that modify Lead Momentum dbs via api calls should ensure they are in a proper state before beginning and that they clean up after themselves even after they fail.

Steps to reproduce

1. Create contact in Lead Momentum
2. Add appointment to contact in Lead Momentum
3. Run any test to create an appoinment
4. Verify that tests fail because we expect ONE user and only after it's created in the test, and the user is expected to be empty.

Current behavior

Tests fail in CI if user already exists in Lead Momentum

Desired behavior

Tests should clean up after themselves an validate the state of leadmo before beginning.

This also requires a dedicated pipeline/account for testing in LeadMo to keep things organized.

Screenshots

No response