Merge pull request #5100 from stevecapperlinaro/for-ceph/tweak-buffer-append-size

Common: Do not use CEPH_PAGE_SIZE when appending buffers in Ceph

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/test/bufferlist.cc
Simple merge