The concat module is not necessary

Seen when building an environment using librarian-puppet where other modules have a dependency on puppetlabs/concat greater than 3. This limits us when we try to upgrade versions of some modules.

I end up seeing conflicting dependencies around the concat module.

I'd just remove concat entirely from puppet-ceph as a dependency, you don't use it.

There are references in the module, in spec tests, to :concat_basedir, but they aren't a reason for the module dependency, they are likely left over from a point in time when you did use concat.

Basically you can just remove the dependency from metadata.json, just 4 lines.

        {
            "name": "puppetlabs/concat",
            "version_requirement": ">=1.2.1 <3.0.0"
        },