osd: use fmt/ranges.h for printing ranges

osd: use fmt/ranges.h for printing ranges

now that fmt/ranges.h provides a generic mechinary for printing
ranges. let's just use it.

the output format is changed a little bit when it comes to
set and map, but as long as it makes sense, and we don't use
a tool to parse the logging messages for extracting information
from the messages printed by fmt::format(), we should be safe.

Signed-off-by: Kefu Chai <tchaikov@gmail.com>