8eb3f42 Prohibit use of `rpm` command from specfile.

Authored and Committed by vondruch 4 years ago
    Prohibit use of `rpm` command from specfile.
    
    This might be problematic, if buildroot was populated using a different
    version of rpm that used a different backend database.
    
    Original discussion at https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/QKTLQ2AITO5MVSX77GYDHTD24ZW7MLFO/