s4-python: Add some more module docstrings.

source4/scripting/python/samba/tests/upgradeprovision.py

@@ -17,6 +17,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+"""Tests for samba.upgradeprovision."""
+
 import os
 from samba.upgradehelpers import  (usn_in_range, dn_sort,
                                   get_diff_sddls, update_secrets,