l2md: add per-repo config option to enable or disable syncing

Introduce a config option to control the fetching/syncing on a
per-repo granularity.

Signed-off-by: Anthony Iliopoulos <ailiopoulos@suse.com>
[ Daniel: rename to sync_enabled to make it more self-documenting
  and enable by default to avoid breaking existing user configs. ]
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
3 files changed