KojiResolver: Filter module builds based on the real stream name.
    
    Query Koji for the real stream name of each module and keep only those matching
    requested `stream`.
    
    This needs to be done, because MBS stores the stream name in the "version" field in Koji,
    but the "version" field cannot contain "-" character. Therefore MBS replaces all "-"
    with "_". This makes it impossible to reconstruct the original stream name from the
    "version" field.
    
    We therefore need to ask for real original stream name here and filter out modules based
    on this real stream name.