Python 3: fix print() syntax

Signed-off-by: NCleber Rosa <crosa@redhat.com>

avocado/core/restclient/cli/app.py

@@ -116,7 +116,7 @@ class App(object):
             self.args = self.parser.parse_args()
             action_result = self.dispatch_action()
         except KeyboardInterrupt:
-            print 'Interrupted'
+            print('Interrupted')
 
         if isinstance(action_result, int):
             sys.exit(action_result)

contrib/scripts/avocado-find-unittests

@@ -44,4 +44,4 @@ if __name__ == '__main__':
             result += ["%s.%s.%s" % (test_module_name, klass, method)
                        for method in methods]
     if result:
-        print "\n".join(result)
+        print("\n".join(result))