This test succeeds, because the mirror parts are found without
assembling the mirror itsself, which is what we want
client_run rd_NO_DM rd_NO_MDIMSM rd_NO_MDADMCONF || return 1
Copy /etc/mdadm.conf to initramfs (even for non-hostonly) if
mdadmconf="yes" is set in dracut.conf or --mdadmconf is specified on the
dracut command line.
This was done, because there seems _no_ sane way to autoassemble md raid
arrays.
also moved rd_NO_MD to an udev ENV