librbd/cache/pwl/ssd: solve competition between read and retire

librbd/cache/pwl/ssd: solve competition between read and retire

SSD read is not like rwl's. SSD need aio read. Therefore,
we cannot guarantee that the data will not be retire
during the period from sending the read request to the SSD
and receiving the data to the memory, which may cause
the corresponding data on the SSD to be overwritten.

Fixes: https://tracker.ceph.com/issues/52236
Signed-off-by: Feng Hualong <hualong.feng@intel.com>