Merge PR #24473 into master

* refs/pull/24473/head:
	common: drop get_contiguous() from ceph::bufferlist.

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/common/buffer.cc
Simple merge

diff --cc src/include/buffer.h
Simple merge

diff --cc src/os/ObjectStore.h
Simple merge

diff --cc src/test/bufferlist.cc
Simple merge