Updated from global requirements

OpenStack Proposal Bot · OpenStack Proposal Bot · commit 02fea08dd656 · 2017-03-22T18:06:34.000Z
Change-Id: Ica7319230790213b9e2b99170355c1a1103e122b
diff --git 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>=1.8 # Apache-2.0
+pbr<2.0.0,>=1.8 # Apache-2.0
 keystoneauth1>=2.18.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 oslo.i18n>=2.1.0 # Apache-2.0
