902c7cb bail on composes of unexpected type, sanity check prod

Authored and Committed by adamwill 8 years ago
    bail on composes of unexpected type, sanity check prod
    
    if compose type is not 'production' or 'nightly', bail out as
    this is something we weren't expecting. For 'production' events
    of the same release as the current event, do a sanity check that
    the new event is newer than the existing one. Add a comment
    explaining the flow for creating the first Rawhide nightly event
    for a new release.
    
        
file modified
+29 -9