Updated openstack/openstack
Project: openstack/sahara  2a52fcc592ba4e8618347e2e1050e7e57cdc3d4f

Fix bug on diskimagebuilder.rst

corrected error in diskimagebuilder.rst

Change-Id: Ie42d5ca94a73bdd43ea283266947d60c94101944
Closes-Bug: #1386384