Updated openstack/openstack
Project: openstack/tempest  84e7eb73f0deda8b1a5dd654f626dacd705aa772

set all build_intervals to 1s

10s build interval is really long, and not very sensible. Setting
to 1s should speed things up a lot.

Change-Id: If8332d4be8515ac574cbbf4e00cbe0a75b6ebc5d