Updated openstack/openstack
Project: openstack/keystone  485c1be8063ebc9de9eb99fafc8f37204ac6e86f

Correct max_project_tree_depth config help text

The sample config file was edited manually and the help text for
the max_project_tree_depth didn't match what gets generated.

Change-Id: I0dd502ead27b4aee917d0b7afb7cc2feb4e55e5b