Updated from global requirements
Change-Id: I5f85413f0bea11408d827e2452e6d60fe2cf0cc6
diff --git a/requirements.txt b/requirements.txt
index 7c934c2..14c42b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
# The order of packages is significant, because pip processes them in the order
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
-pbr>=2.0.0 # Apache-2.0
+pbr!=2.1.0,>=2.0.0 # Apache-2.0
cliff>=2.3.0 # Apache-2.0
jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
testtools>=1.4.0 # MIT