89b97af backend: care only about RPM packages with standard dist

1 file Authored by frostyx 3 years ago, Committed by schlupov 3 years ago,
    backend: care only about RPM packages with standard dist
    
    Some people use non-standard values in their disttags, such as git
    hashes, numbers with unknown semantics, etc. Let's just skip that as
    it is not related to #1501