Merge branch 'tt-box-luafy'

test/big/bitset.result

test/big/bitset.test

test/big/lua/utils.lua

test/big/tree_pk.result

test/big/tree_pk.test

test/box/admin_coredump.result

test/box/admin_coredump.test

test/box/cjson.test

test/box/errinj.test

test/box/fiber.result

test/box/fiber.test

test/box/info.test

test/box/ipc.test

test/box/lua_box_uuid.test

test/box/lua_misc.result

test/box/lua_misc.test

test/box/net.box.test

test/box/net_sql.mysql.test

test/box/net_sql.pg.test

test/box_lua/admin_coredump.result