Fix redis connection url (#450)

* Fix redis connection url

* Update Gemfile.lock

Author: kladaFOX

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    stealth (2.1.0)
+    stealth (2.1.1)
       activesupport (~> 7.0)
       connection_pool (~> 2.4)
       multi_json (~> 1.12)

VERSION

@@ -1 +1 @@
-2.1.0
+2.1.1

lib/stealth/redis.rb

@@ -8,7 +8,7 @@ class RedisConfig
     attr_accessor :url, :pool_size, :pool_timeout
 
     def initialize
-      @url          = Stealth.env.development? ? "redis://localhost:6379/0" : ENV["STEALTH_REDIS_URL"] || ENV["REDIS_URL"]
+      @url          = ENV["STEALTH_REDIS_URL"] || ENV["REDIS_URL"] || "redis://localhost:6379/0"
       @pool_size    = Integer(ENV["STEALTH_REDIS_POOL"] || 5)
       @pool_timeout = Integer(ENV["STEALTH_REDIS_TIMEOUT"] || 5)
     end