move testutils to src/python/oftest

testutils.py needs to be in a common location for different directories of
tests to use it.
diff --git a/tests/actions.py b/tests/actions.py
index f512a02..6bcfb8c 100644
--- a/tests/actions.py
+++ b/tests/actions.py
@@ -20,7 +20,7 @@
 import basic
 import time
 
-from testutils import *
+from oftest.testutils import *
 from time import sleep
 from FuncUtils import *