Support redis-sentinel configuration

[rhubarbgroup]

Support redis-sentinel configuration

[andrewmclagan]

A valid predis config for redis-sentinel looks like:

$sentinels = ['tcp://10.0.0.1', 'tcp://10.0.0.2', 'tcp://10.0.0.3'];
$options   = ['replication' => 'sentinel', 'service' => 'mymaster'];

$client = new Predis\Client($sentinels, $options);

[andrewmclagan]

I mean... i would even love to have a filter so we can inject our own Predis\Client instance.

[tillkruss]

Yeah, a filter for the Predis instance would be idea, or maybe even just for the Predis constructor arguments. You might run into issues with that in case apply_filters() isn't defined that early. Would love to see a tested PR.