Merge pull request #7338 from ceph/cls-lua

Lua object class support

Reviewed-by: Haomai Wang <haomai@xsky.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Yehuda Sadeh <yehuda@redhat.com>
Reviewed-by: Ken Dreyer (Red Hat) <kdreyer@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>

diff --cc src/CMakeLists.txt
Simple merge

diff --cc src/test/CMakeLists.txt
Simple merge