Resolve openSUSE devstack failures
Resolve openSUSE devstack failures

This update resolves multiple issues with python-cryptography
causing keystone server and nova deployment to fail.

This is a temporary workaround until I196f025dbf1a9ac297946b8165620676645f7210
has landed and the extraneous dependency on python-cryptography (the
package) has been removed.

Change-Id: Ifb29b9089197c0429a5fc1cd08a25d2095d481f1

dtroyer/devstack,nawawi/openstack,openstack-dev/devstack,group-policy/devstack,dtroyer/devstack,noironetworks/devstack,openstack-dev/devstack,group-policy/devstack,noironetworks/devstack,nawawi/openstack