DCO-5866 scripts: check for mdsfilesystemtype

Check if the Test-Parameters line is using the old mdsfilesystemtype=
option and ask for it to be removed.  The mdtfilesystemtype= option
should be used instead.

Test-Parameters: trivial mdsfilesystemtype=zfs
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>