Merge remote-tracking branch 'origin/1.9' into 1.10

src/box/applier.cc

src/box/applier.h

src/box/box.cc

src/box/box.h

src/box/lua/cfg.cc

src/box/lua/load_cfg.lua

src/box/replication.cc

src/box/replication.h

test/app-tap/init_script.result

test/box/admin.result

test/box/cfg.result

test/replication/autobootstrap.lua

test/replication/autobootstrap_guest.lua

test/replication/ddl.lua

test/replication/ddl.result

test/replication/ddl.test.lua

test/replication/ddl1.lua

test/replication/ddl2.lua

test/replication/ddl3.lua

test/replication/ddl4.lua