Add after_login_lock callback

[y-yagi]

This patch added a callback that execute only when user locked. This callback useful for run something actions(e.g. send notifications to admin) when user locked.

[y-yagi]

Any feedback?

[joshbuker]

@y-yagi Thanks Yagi, I'll get this into v1. Are there any other callbacks that you've found yourself wishing Sorcery provided?

[y-yagi]

Thanks for the reply! This is the only callback that we need.

[willnet]

@y-yagi I think the implementation looks good. Please resolve the conflicts and update the tests to follow the current style. (Right now, controller specs are written to avoid using mocks as much as possible. ref: #390 )

[y-yagi]

@willnet Hi, I resolved the conflict.

[willnet]

@y-yagi thanks!