Description of problem:
Fedora packaging guidelies says:

Directory ownership is a little more complex than file ownership. Packages must own all directories they put files in, except for:

    any directories owned by the filesystem, man, or other explicitly created -filesystem packages
    any directories owned by other packages in your package's natural dependency chain 

In this context, a package's "natural dependency chain" is defined as the set of packages necessary for that package to function normally. To be specific, you do not need to require a package for the sole fact that it happens to own a directory that your package places files in. If your package already requires that package for other reasons, then your package should not also own that directory.

In all cases we are guarding against unowned directories being present on a system. Please see Packaging:UnownedDirectories for the details. 

http://fedoraproject.org/wiki/Packaging:UnownedDirectories

Version-Release number of selected component (if applicable):


How reproducible:
Deterministic

Steps to Reproduce:
1. dnf install -y libblockdev
2. rpm -qf libblockdev/ libblockdev/conf.d/ libblockdev/conf.d/00-default.cfg

Actual results:
sh# rpm -qf libblockdev/ libblockdev/conf.d/ libblockdev/conf.d/00-default.cfg
file /etc/libblockdev is not owned by any package
file /etc/libblockdev/conf.d is not owned by any package
libblockdev-2.11-1.fc27.x86_64

Expected results:
sh# rpm -qf libblockdev/ libblockdev/conf.d/ libblockdev/conf.d/00-default.cfg
libblockdev-2.11-1.fc27.x86_64
libblockdev-2.11-1.fc27.x86_64
libblockdev-2.11-1.fc27.x86_64