The fix for issue 9614 was not completed, as a result, for those erasure coded PGs with one OSD down, the state was wrongly marked as active+clean+degraded. This patch makes sure the clean flag is not set for such PG.
Signed-off-by: Guang Yang <yguang@yahoo-inc.com>
Merge pull request #2711 from guangyy/wip-9614-followup

Follow-up fix for 9614

Reviewed-by: Samuel Just <sam.just@inktank.com>