Update tox config to use latest upgrades
Update tox config to use latest upgrades

Change-Id: I3b9e627eecc5b805db3fed2ae9571ccfc3dbd6fc

klmitch/pbr,klmitch/pbr,varunarya10/pbr,WiFast/pbr,redhat-openstack/pbr,openstack-dev/pbr,citrix-openstack-build/pbr,openstack-dev/pbr,JioCloud/pbr,varunarya10/pbr,redhat-openstack/pbr,citrix-openstack-build/pbr,JioCloud/pbr,WiFast/pbr,citrix-openstack-build/pbr,openstack-dev/pbr