Merge pull request #1313 from nikromen/specfile-path
    
    Specfile path in config file
    
    According to #1028
    
    User gets warning when specfile path is not specified in config file.
    packit init looks up the specfile path (recursively if needed) and sets it in .packit.yaml
    
    note: I am not sure if my changes are backwards compatible.
    
    Reviewed-by: Jiri Popelka <None>