Make site_utils import conditional on file's existance

Signed-off-by: Martin Bligh <mbligh@google.com>



git-svn-id: http://test.kernel.org/svn/autotest/trunk@2749 592f7852-d20e-0410-864c-8624ca9c26a4
diff --git a/client/bin/utils.py b/client/bin/utils.py
index 98da12c..2261266 100755
--- a/client/bin/utils.py
+++ b/client/bin/utils.py
@@ -7,7 +7,10 @@
 There's no really good way to do this, as this isn't a class we can do
 inheritance with, just a collection of static methods.
 """
+import os
 
 from autotest_lib.client.common_lib.utils import *
 from autotest_lib.client.bin.base_utils import *
-from autotest_lib.client.bin.site_utils import *
+if os.path.exists(os.path.join(os.path.dirname(__file__), 'site_utils.py')):
+    from autotest_lib.client.bin.site_utils import *
+