DataSourceNoCloud: support reading vendor-data

Here we add the ability to read vendor-data from a file named
vendor-data at the same location as the user-data and meta-data files.

At the moment, vendor-data is not read at all from 'seedfrom'.

1 files changed, 2 insertions, 1 deletions

diff --git a/tests/unittests/helpers.py b/tests/unittests/helpers.py
index c0da0983..5b4f4208 100644
--- a/tests/unittests/helpers.py
+++ b/tests/unittests/helpers.py
@@ -187,7 +187,8 @@ class FilesystemMockingTestCase(ResourceUsingTestCase):
 
 
 def populate_dir(path, files):
-    os.makedirs(path)
+    if not os.path.exists(path):
+        os.makedirs(path)
     for (name, content) in files.iteritems():
         with open(os.path.join(path, name), "w") as fp:
             fp.write(content)