Add additional note dependent upon os_ironic_facts
Add additional note dependent upon os_ironic_facts

Adding additional note to example deployment playbook that is
dependent upon os_ironic_facts expressing that a user could leverage
the module combined with something similar to the facts to permit a
user to utilize original data sources.

Change-Id: I3b23e4176798dc8cc3f6f7f1a01c5c7fbd3c4161
Depends-On: Ief657e06e781133dd53a58c1da11802d8d7d03c4

EntropyWorks/bifrost,openstack/bifrost,devananda/bifrost,devananda/bifrost,EntropyWorks/bifrost,bcornec/bifrost,bcornec/bifrost,openstack/bifrost