Media component config

See merge request FLAME/flame-clmc!26

Merge branch 'mediaComponentConfig' of gitlab.it-innovation.soton.ac.uk:FLAME/flame-clmc into mediaComponentConfig

conftest now simply returns an initialised simulator object

Ci test

See merge request FLAME/flame-clmc!25

splitting causes jobs to run in different directories which is not what we want so back to one job and extending the timeout

split tests as they were taking too long on castan and hitting timeout of 60, increased time out to 120 as well

get_db_client -> influx_db

Also fixes field validation for unspecified metric data

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