Comment 10 for bug 1693188

Affected only new deployment. In case of upgrade you can delete those parameters manually.

Verified on Fuel 9.2 MU 2 (MOS_UBUNTU_ID = 9.0-2017-06-16-104420):

root@node-1:~# tail -n 20 /etc/keystone/keystone.conf

[trust]

#
# From keystone
#

# Delegation and impersonation features can be optionally disabled. (boolean
# value)
#enabled = true

# Enable redelegation feature. (boolean value)
#allow_redelegation = false

# Maximum depth of trust redelegation. (integer value)
#max_redelegation_count = 3

# Entrypoint for the trust backend driver in the keystone.trust namespace.
# (string value)
#driver = sql
root@node-1:~#