Update code for Python3

iplugin.py

@@ -59,7 +59,7 @@ class IPlugin(object):
 def validConfRequirements(conf_requirements, iwla, plugin_path):
     for r in conf_requirements:
         if iwla.getConfValue(r, None) is None:
-            print '\'%s\' conf value required for %s' % (r, plugin_path)
+            print('\'%s\' conf value required for %s' % (r, plugin_path))
             return False
 
     return True
@@ -89,7 +89,7 @@ def preloadPlugins(plugins, iwla):
 
                 if len(classes) > 1:
                     logger.warning('More than one class found in %s, loading may fail. Selecting %s' % (plugin_path, classes[0]))
-                    print classes
+                    print(classes)
                     continue
 
                 plugin = classes[0](iwla)