Nothing is currently being done with this information, but it will be
soon.
(cherry picked from commit 0f69d2084c)
(cherry picked from commit 76d376fe18)
This adds support for the optional blueprint section [customizations].
Use it like this:
[customizations]
hostname = yourhostnamehere
[[customizations.sshkey]]
user = root
key = root user key
Chris Lumens
Brian C. Lane