Comment 4 for bug 1663771

There are two issues around this bug:

 1. Keystoneauth is trying to get response.text for achieved response when debug log is enabled. This action consumes all memory (14G for 400MB file in my case). This issue already fixed in stable/mitaka branch in upstream. Change https://review.fuel-infra.org/#/c/30981/ brings all changes to keystoneauth library from stable/mitaka
 2. 'openstack object save' command is extremely slow (see https://bugs.launchpad.net/python-openstackclient/+bug/1654645). Fix proposed at https://review.fuel-infra.org/30996