Following up on the discussion on the Factory list
https://lists.opensuse.org/archives/list/factory@lists.opensuse.org/message/LAVWN3MNO4LBWWN2TAOGLTNVFFTCEOBD/
All packages installing files into /bin, /sbin, /lib and /lib64
should change the location to the counterpart in /usr instead.
Please consider doing that for mdadm.

If mdadm still needs to build for released distros you may
keep the legacy locations within a "%if %suse_version < 1550" block
of course. If you do that, please do *NOT* install symlinks from/to
/usr as it was done with some packages in the past. Move the files
in question instead.