Re: [PATCH] Issues when reporting with --fields

Tested against b2aaf2b3f5c8d758825028dacdeadbdd2e50e4a8. Please commit. Purpose of patch: Examples: (1) Prior to patch, try running 'cobbler report --format=mediawiki --fields=hostname --what=repos'. In this case, one will receive a stack trace, since 'hostname' is not a field for a "distro" item.

(2) Prior to patch, try running 'cobbler report --format=mediawiki --fields=ks_meta[X] --what=systems', where "X" is some metavariable key in an 'X=Y' statement. In this case, if some set of systems contain "ks_meta: 'X=Y,...'" and others do not, then a stack trace will occur when reporting encounters one of the latter items. --- Everything should be fixed now w.r.t. these kinds of edge case issues. If there are more, please post them to the cobbler-devel list. Regards, - A.