add method to rename devices

Author: skrobul

lib/zenoss/model/devices/device.rb

@@ -202,6 +202,15 @@ def get_system_names_string(sep=',')
         rest("getSystemNamesString?sep=#{sep}")
       end
 
+      # Change name of the device
+      def rename_device(new_name)
+        ret = rest("renameDevice?newId=#{new_name}")
+        if ret
+          self.name  = new_name
+        end
+        return ret
+      end
+
 
       private