Fix column headings regression due to switch to cliutils

After switch to cliutils in https://review.openstack.org/72418
field_labels argument is no longer respected in print_list.
This patch updates cliutils to version introduced in
https://review.openstack.org/#/c/113978 and fixes usage
of the newly-introduced field_labels argument to print_list.

Change-Id: I4c5ca149816e4476f170b30de6855dec747522dd
Closes-Bug: #1342391
Merge "Fix column headings regression due to switch to cliutils"