Log IP address when a user enters a wrong password

[Elinvention]

If I try to login with a wrong password, this message is logged:

WARNING:mediagoblin.auth.tools:Wrong password for u'elinvention'

I'd like to set up fail2ban for Mediagoblin, but without IP address I can't do much...

A message like this would be better:

WARNING:mediagoblin.auth.tools:Wrong password for u'elinvention' from xxx.xxx.xxx.xxx

[ayleph]

We can pull the address out of the request, but we don't pass the request down to the function that checks the login. I don't know that it makes sense to modify the arguments to that function, so here's an alternative. If the login check fails, we log the IP address back up in mediagoblin.auth.views where we do have access to the request. It results in log entries like this.

2017-08-15 02:06:02,044 WARNING [mediagoblin.auth.tools] Wrong password for u'admin'
2017-08-15 02:06:02,045 WARNING [mediagoblin.auth.views] Failed login attempt from 'xxx.xxx.xxx.xxx'
2017-08-15 02:06:16,700 INFO    [mediagoblin.auth.tools] User u'cats' not found
2017-08-15 02:06:16,708 WARNING [mediagoblin.auth.views] Failed login attempt from 'xxx.xxx.xxx.xxx'

I'll upload the patch that enables this.

[ayleph]

Pushed in ​b121d89.