[pungi-fedora] PR #1218: Prep for rc-1.5 and add space to ostree installer images

[Kevin Fenzi]

kevin merged a pull-request against the project: `pungi-fedora` that you are following.

Merged pull-request:

``
Prep for rc-1.5 and add space to ostree installer images
``

https://pagure.io/pungi-fedora/pull-request/1218