Merge pull request #43474 from xxhdx1985126/wip-epm-strategy

crimson/os/seastore: implement Sprite LFS' gc and extent placement strategy to lower gc cost

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>

diff --cc src/crimson/common/interruptible_future.h
Simple merge