Fix object ownable revision
Fix object ownable revision

The loop used the wrong objects for creating revisions.

AleksNeStu/ggrc-core,VinnieJohns/ggrc-core,selahssea/ggrc-core,plamut/ggrc-core,plamut/ggrc-core,AleksNeStu/ggrc-core,VinnieJohns/ggrc-core,VinnieJohns/ggrc-core,selahssea/ggrc-core,selahssea/ggrc-core,AleksNeStu/ggrc-core,VinnieJohns/ggrc-core,AleksNeStu/ggrc-core,plamut/ggrc-core,plamut/ggrc-core,selahssea/ggrc-core