Updated openstack/openstack
Project: openstack/keystone  b276f3dbc9ef1a6b2bd952c88eb45fde9b646f68

Fix fakeldap search_s documentation

FakeLdap's search_s documentation said it only supported base and
subtree, but it also supports onelevel.

Change-Id: I7536855d5a94a5d570e993be1a1e3da92ddd9e0f