Few minor fixes to Redis params order and commented out sentinel config

in resque.yml.example

Codestyle changes

config/resque.yml.example

@@ -3,13 +3,13 @@
 #
 development:
   url: redis://localhost:6379
-  sentinels:
-    -
-      host: localhost
-      port: 26380 # point to sentinel, not to redis port
-    -
-      host: slave2
-      port: 26381 # point to sentinel, not to redis port
+  # sentinels:
+  #   -
+  #     host: localhost
+  #     port: 26380 # point to sentinel, not to redis port
+  #   -
+  #     host: slave2
+  #     port: 26381 # point to sentinel, not to redis port
 test:
   url: redis://localhost:6379
 production:
@@ -18,17 +18,17 @@ production:
   ##
   # Redis + Sentinel (for HA)
   #
-  # Please read instructions carefully before using it as you may loose data:
+  # Please read instructions carefully before using it as you may lose data:
   # http://redis.io/topics/sentinel
   #
   # You must specify a list of a few sentinels that will handle client connection
   # please read here for more information: https://github.com/redis/redis-rb#sentinel-support
   ##
-  #url: redis://master:6379
-  #  sentinels:
-  #    -
-  #      host: slave1
-  #      port: 26379 # point to sentinel, not to redis port
-  #    -
-  #      host: slave2
-  #      port: 26379 # point to sentinel, not to redis port
+  # url: redis://master:6379
+  # sentinels:
+  #   -
+  #     host: slave1
+  #     port: 26379 # point to sentinel, not to redis port
+  #   -
+  #     host: slave2
+  #     port: 26379 # point to sentinel, not to redis port

lib/gitlab/mail_room.rb

@@ -4,7 +4,6 @@ require_relative 'redis' unless defined?(Gitlab::Redis)
 
 module Gitlab
   module MailRoom
-
     class << self
       def enabled?
         config[:enabled] && config[:address]

lib/gitlab/redis.rb

@@ -53,18 +53,19 @@ module Gitlab
 
     def redis_store_options
       config = raw_config_hash
+      redis_url = config.delete(:url)
+      redis_uri = URI.parse(redis_url)
 
-      redis_uri = URI.parse(config[:url])
       if redis_uri.scheme == 'unix'
         # Redis::Store does not handle Unix sockets well, so let's do it for them
         config[:path] = redis_uri.path
+        config
       else
-        redis_hash = ::Redis::Store::Factory.extract_host_options_from_uri(config[:url])
-        config.merge!(redis_hash)
+        redis_hash = ::Redis::Store::Factory.extract_host_options_from_uri(redis_url)
+        # order is important here, sentinels must be after the connection keys.
+        # {url: ..., port: ..., sentinels: [...]}
+        redis_hash.merge(config)
       end
-
-      config.delete(:url)
-      config
     end
 
     def raw_config_hash