distinguish between storage/cdn requests for rackspace files

lib/fog/rackspace/files.rb

@@ -21,12 +21,13 @@ module Fog
         @cdn_path   = cdn_uri.path
         @cdn_port   = cdn_uri.port
         @cdn_scheme = cdn_uri.scheme
+        @cdn_connection = Fog::Connection.new("#{@cdn_scheme}://#{@cdn_host}:#{@cdn_port}")
         storage_uri = URI.parse(credentials['X-Storage-Url'])
         @storage_host   = storage_uri.host
         @storage_path   = storage_uri.path
         @storage_port   = storage_uri.port
         @storage_scheme = storage_uri.scheme
-        @connection = Fog::Connection.new("#{@storage_scheme}://#{@storage_host}:#{@storage_port}")
+        @storage_connection = Fog::Connection.new("#{@storage_scheme}://#{@storage_host}:#{@storage_port}")
       end
 
       def parse_data(data)
@@ -51,7 +52,7 @@ module Fog
       end
 
       def cdn_request(params)
-        response = @connection.request({
+        response = @cdn_connection.request({
           :body     => params[:body],
           :expects  => params[:expects],
           :headers  => {
@@ -69,7 +70,7 @@ module Fog
       end
 
       def storage_request(params)
-        response = @connection.request({
+        response = @storage_connection.request({
           :body     => params[:body],
           :expects  => params[:expects],
           :headers  => {