* users for admin/subscriber realms are now banned if failed
to login X amount of times (UI/API).
* rework Redis connection and it's now a Catalyst plugin NGCP::Redis
accessed by $c->redis_get_connection({database => 19}), the connection
per database, per worker process is established only once and then
reused (with auto built-in reconnect support).
* remove Utils::Redis.pm as it does not have any code/logic anymore.
* ban values are taken from $config->{security}{login} as
- ban_enable: 1
- ban_expire_time: 3600 ban expire time in seconds
- max_attempts: 5
* if max_attempts set to 0, the ban functionality is disabled as it
requires to be at least 1 to work.
* upon successful login or ban, the failed attempts counter is removed
* the failed attempts counter is also removed automatically with the
expire time equals "ban_expire_time" or otherwise 3600 seconds.
* user bans are logged into panel.log
* banned user receives exactly the same return page/codes as per
invalid logic.
Change-Id: I05cc68c623ee289488fc64f1af50527004dcaae1
Kirill Solomko
60fa23cb68