Updated openstack/openstack
Project: openstack-dev/devstack  2b8aae621e1a3cf5e161e6e37c210fc0297ced18
null
Added the import of lib/infra

This fixes an error in the devstack/functions
setup_develop call, which tries to cd to
$REQUIREMENTS_DIR, which is created in lib/infra

Change-Id: Ie65d2ba83547acc4ea36d1191e6e90dc21da1fa7
Closes-Bug: #1276365