Capture stream write error

Docker-DCO-1.1-Signed-off-by: Mangled Deutz <[email protected]> (github: dmp42)

Author: Mangled Deutz

tests/test_s3.py

@@ -63,7 +63,10 @@ def test_stream_write(self):
         self._storage.stream_write(filename, io)
         assert self._storage.exists(filename)
         # Test that EOFed io string throws IOError on lib/storage/s3
-        self._storage.stream_write(filename, io)
+        try:
+            self._storage.stream_write(filename, io)
+        except IOError:
+            pass
         # Cleanup
         io.close()
         self._storage.remove(filename)