Remove upper cap on pbr
Remove upper cap on pbr

Change-Id: I119e5c0601994ff22a42db375e54fa3e90edda6d
Signed-off-by: Julien Danjou <5c682c2d1ec4073e277f9ba9f4bdf07e5794dabe@danjou.info>

openstack/python-aodhclient