Security update for openstack-swift (important)

openstack-swift was updated to fix three security issues.

These security issues were fixed:

• CVE-2015-1856: OpenStack Object Storage (Swift), when allow_version is
  configured, allowed remote authenticated users to delete the latest
  version of an object by leveraging listing access to the
  x-versions-location container (bsc#927793).
• CVE-2014-7960: OpenStack Object Storage (Swift) allowed remote
  authenticated users to bypass the max_meta_count and other metadata
  constraints via multiple crafted requests which exceed the limit when
  combined (bsc#900253).
• CVE-2015-5223: Information leak via Swift tempurls (bsc#942641).