Updated openstack/openstack
Project: openstack-dev/devstack  906ffb7b773e3007062d9feaa54dc55eaf692684

XenAPI: Fix deprecated config options

I346ee0248c03e60716bd7dc4a5ee4493610867cb broke the XenServer CI as
devstack was still setting the deprecated config options.

Change-Id: Icd84212e97a9d5e007745be8096fa552bc23cb6f