Originally complained about in BZ 248763, the advanced options screen of the
kickstart is fairly constricting. 

The following features would greatly benefit kickstarting:

1.  Allow the user to add their own advanced options (so if new ones are
available, they would not be constrained to what we support).

2.  Allow multiple of the same advanced options to exist within a kickstart.  
For example, currently it is not possible to have multiple multiple device lines
or multiple repo lines (if we allow repos again).  The advanced options page
only allows for one of each type.  (This is why the repo option was removed from
the advanced options page in bz 244871).