Merge branch '1.10' into 1.10-features

src/box/box.cc

src/box/box.h

src/box/lua/info.c

src/box/request.c

src/httpc.c

test/app/socket.result

test/app/socket.skipcond

test/app/socket.test.lua

test/engine/ddl.result

test/engine/ddl.test.lua

test/replication/before_replace.result

test/replication/before_replace.test.lua

test/replication/hot_standby.result

test/replication/hot_standby.test.lua