Role specific derive parameters workflow parameter
Role specific derive parameters workflow parameter

Added 'hw_data_required' parameter with default value 'true'.
This parameter is used to identify whether role specific
derive parameters workflows needs to be invoked or not.
invokes role specific derive parameters if hw_data_required is
true, otherwise only common derive parameters will be invoked.

Change-Id: I9807dbd1cb71deb6a483f24d36db344b8a09c63e

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates