Updated the integration test of the aggregator to use the CLMC service directly instead of running the aggregator as a thread

conftest now simply returns an initialised simulator object

get_db_client -> influx_db

Refactors simulator based fixtures in conftest and embeds MC config state into simulation boot sequence

Restructure pytest package to use correct module names and provide setup.py to build a python package distribution, needed to more effectively reuse tests in the platform project build/test process