Moving the RHEL modules management into the base image will make it
so we will have shared and consistent modules across all container
images; and also configurable from a central place, the base.yaml.
Also, allow to find the module versions from the
{{ tcib_rhel_modules }} variable so later in tripleoclient we can
override the modules versions from the CLI with a new --rhel-modules
argument (which will take comma separated list of modules and their
versions).
Change-Id: I782cbfd3c88b30c801961c6d8ba875d36f59bf42
(cherry picked from commit 640b76608d)
1b1f0229e5