https urls do not work

[pgodel]

When adding a https check node crashed with a not supported error.

[jwarchol]

It also won't start again, good times.

[pgodel]

correct, I edited the mongodb document directly to fix it, look for the document in the checks collection.

[fzaninotto]

It's not just https. ftp, tcp, udp checks are on the list. It's just that the Poller class needs to be refactored to use an adapter pattern. After that, adding an https poller is quite simple.