Now psutil>=1.1.0 is actually on PyPI

Version 1.1.0 doesn't work, so exclude it from the version list.

Patch of requirements: https://review.openstack.org/#/c/68946

Closes-Bug: #1275716

Change-Id: I1e676f96070d1704de84f89bddbc5b23a6c6d966
Merge "Now psutil>=1.1.0 is actually on PyPI"