Imports github.com/apcera/libretto/Godeps/_workspace/src/github.com/rackspace/gophercloud/testhelper github.com/apcera/libretto/Godeps/_workspace/src/github.com/rackspace/gophercloud github.com/apcera/libretto/Godeps/_workspace/src/github.com/rackspace/gophercloud/openstack Standard library imports os testing