Pin pbr to 0.11.0: Jenkins build process will install pbr first and then build wheel file. The working version is 0.11.0
Pin pbr to 0.11.0: Jenkins build process will install pbr first and then build wheel file. The working version is 0.11.0

Change-Id: I5a666de236cef6e7a12314025c5f31652a10c4a3

obulpathi/poppy,obulpathi/poppy,openstack/poppy,openstack/poppy,stackforge/poppy,stackforge/poppy,openstack/poppy,obulpathi/poppy,stackforge/poppy