[rackspace] updated to pass string rather and a uri to Fog::Connection

lib/fog/core/connection.rb

@@ -3,7 +3,7 @@ module Fog
 
     def initialize(url, persistent=false, params={})
       Excon.defaults[:headers]['User-Agent'] ||= "fog/#{Fog::VERSION}"
-      @excon = Excon.new(url.to_s, params)
+      @excon = Excon.new(url, params)
       @persistent = persistent
     end
 

lib/fog/rackspace/cdn.rb

@@ -111,7 +111,7 @@ module Fog
           @persistent = options[:persistent] || false
 
           if endpoint_uri
-            @connection = Fog::Connection.new(endpoint_uri, @persistent, @connection_options)
+            @connection = Fog::Connection.new(endpoint_uri.to_s, @persistent, @connection_options)
             @enabled = true
           end
         end

lib/fog/rackspace/compute_v2.rb

@@ -113,7 +113,7 @@ module Fog
           deprecation_warnings(options)
           
           @persistent = options[:persistent] || false
-          @connection = Fog::Connection.new(endpoint_uri, @persistent, @connection_options)
+          @connection = Fog::Connection.new(endpoint_uri.to_s, @persistent, @connection_options)
         end
         
         def deprecation_warnings(options)

lib/fog/rackspace/storage.rb

@@ -112,7 +112,7 @@ module Fog
           @auth_token = authenticate
           @persistent = options[:persistent] || false
           Excon.defaults[:ssl_verify_peer] = false if service_net?
-          @connection = Fog::Connection.new(endpoint_uri, @persistent, @connection_options)
+          @connection = Fog::Connection.new(endpoint_uri.to_s, @persistent, @connection_options)
         end        
         
         def account