Add diskimage-builder project install
Add diskimage-builder project install

Disk-image-create file has been removed from 'diskimage-builder/bin/'.
see:
https://github.com/openstack/diskimage-builder/tree/master/bin

So,We nedd install diskimage-builder project before execute
disk-image-create command.

Change-Id: Idd052154ac3603a70a4b23eb17f4c84a8b321358

noironetworks/heat,openstack/heat,openstack/heat,noironetworks/heat