Comment 7 for bug 1569768

Reviewed: https://review.fuel-infra.org/19586
Submitter: Aleksandra Fedorova <email address hidden>
Branch: master

Commit: ecbf37a33f9105f5a9c59dcb040c3ee0fe8fa903
Author: Dmitry Kaigarodsev <email address hidden>
Date: Wed Apr 13 15:00:05 2016

Pin 'pbr==1.8.1' for nailgun_perfomance job

* added 'echo "pbr==1.8.1" >> ./nailgun/test-requirements.txt'

Closes-Bug: #1569768
Change-Id: I7a03c173f518e9fa7e04edb017339beee89ab89b