move base test classes to oftest.base_tests

This lets them be shared between separate directories of tests.
diff --git a/tests/FuncUtils.py b/tests/FuncUtils.py
index d12c388..5cfcb6a 100644
--- a/tests/FuncUtils.py
+++ b/tests/FuncUtils.py
@@ -12,7 +12,7 @@
 import oftest.parse as parse
 import logging
 import types
-import basic
+import oftest.base_tests as base_tests
 from oftest.testutils import *
 from time import sleep