* move constants, move schema validation to init, prepare for zeroconf/config flow
* update requirements_all and make setup validation more pythonic
* mistake in refactor
* un-revert change from previous PR
* rename schema var
* update .coveragerc, move validate_auth to __init__, only attempt to get ESN if device setup is validated
* reinstate validate_setup but change logic to use new connection test function
* fix schema validation
* simplify string empty check logic
* missed commit
7d58de1bda