8365377 PR#698: set optional_arches to list

Merged and Committed by mikem 6 years ago
    PR#698: set optional_arches to list
    
    Merges #698
    https://pagure.io/koji/pull-request/698
    
    Fixes: #697
    https://pagure.io/koji/issue/697
    CLI `_build_image` doesn't really set `optional_arches` as a list
    
        
file modified
+3 -2