update_system should be able to send all the data as at announce_syst…

…em (bnc#889778)

lib/suse/connect/api.rb

@@ -51,11 +51,13 @@ def announce_system(auth, distro_target = nil, instance_data = nil)
       #   In this case we expect Base64 encoded string with login and password
       # @return [OpenStruct] responding to #body(response from SCC), #code(natural HTTP response code) and #success.
       #
-      def update_system(auth)
+      def update_system(auth, distro_target = nil, instance_data = nil)
         payload = {
           :hostname      => System.hostname,
-          :hwinfo        => System.hwinfo
+          :hwinfo        => System.hwinfo,
+          :distro_target => distro_target || Zypper.distro_target
         }
+        payload[:instance_data] = instance_data if instance_data
         @connection.put('/connect/systems', :auth => auth, :params => payload)
       end