(#18336) osfamily for mandrake

This commit will add another osfamily entry for Mandrake that includes
the Mandriva derivative. It will also allow for change in the urpmi
package provider as noted in ticket #18335.
Merge branch 'ghoneycutt-tickets/2.x/18336_osfamily_for_mandrake'

* ghoneycutt-tickets/2.x/18336_osfamily_for_mandrake:
  (#18336) osfamily for mandrake