unskipping bug related to test_stamp_pattern.py

The bug (1205344) is medium importance in nova.
So the skip probably not required.

Change-Id: I2a8da038d09b7962c2760a9fc9f9046355ab4d23
Make smoketests working again with Python 2.6/nose

With the switch to testr, the nosetests configuration setting
was lost. Restore.

Change-Id: I55844f6875bdca9cc1f0a63441c4da3d65d92246
Merge "Make smoketests working again with Python 2.6/nose"
Merge "unskipping bug related to test_stamp_pattern.py"