Bump global requirement pins
Bump global requirement pins

Gnocchi now needs a new minimum of setuptools, > 39.2.0.
We therefore bump to latest version available.

Change-Id: I35a9e88e1904cb92218752c6b3564ff6b0e990f4

openstack/openstack-ansible,stackforge/os-ansible-deployment,openstack/openstack-ansible,stackforge/os-ansible-deployment