Update Sidekiq and config

Gemfile.lock

@@ -166,7 +166,7 @@ GEM
     execjs (1.4.0)
       multi_json (~> 1.0)
     fabrication (2.5.4)
-    facter (1.6.17)
+    facter (1.6.18)
     fakeweb (1.3.0)
     faraday (0.8.5)
       multipart-post (~> 1.1)
@@ -260,7 +260,7 @@ GEM
     mixlib-shellout (1.1.0)
     mocha (0.10.5)
       metaclass (~> 0.0.1)
-    multi_json (1.7.1)
+    multi_json (1.7.2)
     multipart-post (1.1.5)
     mustache (0.99.4)
     net-scp (1.0.4)
@@ -356,7 +356,7 @@ GEM
     rdoc (3.12.1)
       json (~> 1.4)
     redcarpet (2.2.2)
-    redis (3.0.2)
+    redis (3.0.3)
     redis-actionpack (3.2.3)
       actionpack (~> 3.2.3)
       redis-rack (~> 1.4.0)
@@ -413,7 +413,7 @@ GEM
     shoulda-matchers (1.4.2)
       activesupport (>= 3.0.0)
       bourne (~> 1.1.2)
-    sidekiq (2.7.0)
+    sidekiq (2.8.0)
       celluloid (~> 0.12.0)
       connection_pool (~> 1.0)
       multi_json (~> 1)

config/initializers/sidekiq.rb

@@ -1,7 +1,4 @@
-Sidekiq.configure_server do |config|
-  config.redis = { :url => $redis.url, :namespace => 'sidekiq' }
-end
+sidekiq_redis = { :url => $redis.url, :namespace => 'sidekiq' }
 
-Sidekiq.configure_client do |config|
-  config.redis = { :url => $redis.url, :namespace => 'sidekiq' }
-end
+Sidekiq.configure_server { |config| config.redis = sidekiq_redis }
+Sidekiq.configure_client { |config| config.redis = sidekiq_redis }