Provide a sample storage environment file
Provide a sample storage environment file

Meant to help users configure their storage parameters by copying this
file out, amending it and passing it to `heat stack-create` or
`openstack overcloud deploy`.

Defaults to using Ceph as a backend for Cinder, Glance and also Nova
ephemeral storage.

Change-Id: Ia8f5ef175439394aacdea98cfd66416bcb9bfe3a

wyg3958/tripleo-heat-templates,trozet/tripleo-heat-templates,trozet/tripleo-heat-templates,dprince/tripleo-heat-templates,wyg3958/tripleo-heat-templates,openstack/tripleo-heat-templates,bcrochet/tripleo-heat-templates,trozet/opnfv-tht,bcrochet/tripleo-heat-templates,trozet/opnfv-tht,dprince/tripleo-heat-templates,bcrochet/tripleo-heat-templates,openstack/tripleo-heat-templates,trozet/opnfv-tht