Comment 9 for bug 1625518

Reviewed: https://review.openstack.org/374058
Committed: https://git.openstack.org/cgit/openstack/network-checker/commit/?id=2dc38414ab9bc32e9dc5b1ab71bea4e4d8eb1bb3
Submitter: Jenkins
Branch: stable/mitaka

commit 2dc38414ab9bc32e9dc5b1ab71bea4e4d8eb1bb3
Author: Bulat Gaifullin <email address hidden>
Date: Wed Sep 21 12:40:49 2016 +0300

    Requirements on cliff-tab is replaced with cliff requirement.

    cliff-tab is not used in the network-checker code.
    cliff-tab provides entry points for formatters with names similar
    to provided by cliff. It breaks fuel/fuel2 client output when
    non default format is used: json, yaml, e.t.c.

    Change-Id: I3be7c4492305f9eda18da060cd043646732232f3
    Partial-Bug: #1625518
    (cherry picked from commit 5efbc91a120ae3dc12e8751ba4bdf2644590939c)