Fix four format string bugs:
- raft_group0.cc: the exception from sleep_and_abort was passed as an
argument but had no {} placeholder, so it was silently dropped.
- storage_service.cc: loading topology trace was missing a placeholder
for the cleanup field (9 args but only 8 placeholders).
- storage_service.cc: two join-rejection warnings had a spurious comma
after the first string literal, breaking C++ string concatenation.
This caused the continuation string to be treated as a separate
format argument instead of being part of the format string, and
params.host_id was silently dropped.
Signed-off-by: Yaniv Kaul <yaniv.kaul@scylladb.com>
4ee81f9b32