Updated openstack/openstack
Project: openstack/sahara  6cb3d14b88c685c1ea8e7edffe93bf8f7cc289f4

Fix docs to use sahara-all instead of sahara-api

The binary which was previously known as sahara-api was renamed to
sahara-all. The fix reflects that in the docs.

Change-Id: I525dfcae4ef3b1046ca246f41ebf2ea9f48553dc