factored out the header bundle building to the auth lib

lib/opscode/rest.rb

@@ -190,20 +190,11 @@ def request(method, url, options={}, limit=10)
 
       if options[:authenticate]
         ts = options[:timestamp] || Time.now.utc.iso8601
-        sign_obj = Mixlib::SignedHeaderAuth.signing_object(:http_method=>method,:body=>options[:payload]||"",:timestamp=>ts,:user_id=>options[:user_id])
-
-        signing_description = 'version=1.0;algorithm=sha256'
-        signed = sign_obj.sign(options[:user_secret])
-        hashed_body = sign_obj.hash_body
-        options[:headers].merge!( {
-            :x_ops_sign=>signing_description,
-            :x_ops_userid=>options[:user_id],
-            :x_ops_timestamp=>ts,
-            :x_ops_content_hash=>hashed_body,
-            :authorization=>signed,
-          })
+        body = options[:payload] || ""
+        sign_obj = Mixlib::SignedHeaderAuth.signing_object(:http_method=>method,:body=>body,:timestamp=>ts,:user_id=>options[:user_id])
+        options[:headers].merge!(sign_obj.sign(options[:user_secret]))
       end
-            
+
       req = RestClient::Request.new(
         :method => method,
         :url    => url,