Add database & password parameters support for predis sentinel

[Erliz]

If you use Sentinel you could not set db id in dsn like this redis://%redis_host%:%redis_port%/1 you will have an exception:

[Predis\ClientException]
  No sentinel server available for autodiscovery.

cause this dsn is connection for sentinel hosts and it have no idea about database number.
For this reason predis add additional parameters to connection options
in this issue predis/predis#131 (comment)
by this commit predis/predis@a816adf

After a day of debugging this bundle and predis i found this magic method setDefaultParameters and it's work like a charm for me.

i think it will be relative for
#274
#315
#339
#336

[MyDigitalLife]

It would be nice to also update the documentation in Resources/doc/index.md to reflect that these options have been added.

[Erliz]

I already add it doc_update

[Erliz]

After sentinel return connection to master/slave there is no option to wrap NodeConnection with ConnectionWrapper, i add it similarly by sentinel connection.

[MyDigitalLife]

Sorry, didn't see that. Nice job.

[Crozin]

Any chance for merge anytime soon?

[snc]

Can you please change this to:

The optional parameters option can be used to set parameters like the database number and password for the master/slave connections, they don't apply for the connection to sentinal.

(if it sounds correct to you, I don't have sentinal experience)

[Erliz]

Improved

[snc]

Thanks, merged.