* Made it possible to define multiple octoprint printers
* style fix
* Added configuration option for octoprint port
* SSL support in octoprint platform configuration
* Octoprint component now auto loads sensor and binary_sensor platforms
* preliminary support for auto discovery of octoprint servers
* Moved sensors and binary sensors configuration into main octoprint configuration
* Using base_url as the key for storing api in the octoprint component
* made sure to not supersede the platforms' domains
* bugfix: continue setting up other printers if one fails
* flake8 style correction
* Added icons to sensors
* Fail platform setup if no printers were successfully added
* Simplified custom validator
## Description:
More fixes flagged by pylint 2 that don't hurt to have before the actual pylint 2 upgrade (which I'll submit soon).
## Checklist:
- [ ] The code change is tested and works locally.
- [x] Local tests pass with `tox`. **Your PR cannot be merged unless tests pass**
Fabien Piuzzi
Ville Skyttä
William Scanlon
Mike Megally
Fabian Affolter
William Scanlon
Paulus Schoutsen