SSL-Lab check for domains

Check the SSL status of domains (#12 (closed)) and show the result them on minion detail page or dashboard.

The Domain model could be extendet with a boolean field for ssl checks

https://www.ssllabs.com/ssltest/

Python libs

SSL-Labs api documentation

https://github.com/ssllabs/ssllabs-scan/blob/stable/ssllabs-api-docs.md