Limit the variants with config option 'tree_variants' (dennis)
    
    - [createrepo-wrapper] Fix --deltas argument (lsedlar)
    - [createrepo-wrapper] Add tests (lsedlar)
    - [koji-wrapper] Retry watching on connection errors (lsedlar)
    - [createrepo-wrapper] Refactor code (lsedlar)
    - [paths] Use variant.uid explicitly (lsedlar)
    - [createrepo] Add tests (lsedlar)
    - [createrepo] Refactor code (lsedlar)
    - [image-build] Fix resolving git urls (lsedlar)
    - [testphase] Don't run repoclosure for empty variants (lsedlar)
    - [live-images] No manifest for appliances (lsedlar)
    
    Signed-off-by: Dennis Gilmore <dennis@ausil.us>