Remove pip install paunch
Remove pip install paunch

We now have python-paunch-1.1.1 [1] in the overcloud images so we do not
need to pip install it any longer.

[1] https://trunk.rdoproject.org/centos7-master-head/current/python-paunch-1.1.1-0.20170602043913.c8e22e5.el7.centos.noarch.rpm

Change-Id: I1ede514a8aee7ac217fa75843e67fb6542e06f99

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates