CA-125486: Don't use commas in /etc/multipath.conf

The syntax of some of the custom entries in /etc/multipath.conf is wrong. It is
not valid to separate parameter declarations using commas.

The DM multipath parser misreads and does not apply the errornous custom
configuration entries for DELL MD36xx(i|f), IBM 1723* and DataCore SAN*.

Signed-off-by: Robert Breker <robert.breker@citrix.com>