osd_types: op_queue_age_hist and fs_perf_stat should be in osd_stat_t::operator==

Fixes: 10259
Backport: giant, firefly, dumpling
Signed-off-by: Samuel Just <sjust@redhat.com>
Merge pull request #3158 from athanatos/wip-10259

osd_types: op_queue_age_hist and fs_perf_stat should be in osd_stat_t::o...

Reviewed-by: Sage Weil <sage@redhat.com>