Class SlotRange

test/brpc_redis_cluster_unittest.cpp:225–230

                (override_owner == 0 || override_owner == 1) &&
                override_owner != default_owner) {
                struct SlotRange {
                    int start;
                    int end;
                    int owner;
                    SlotRange(int s, int e, int o) : start(s), end(e), owner(o) {}
                };

                std::vector<SlotRange> ranges;
                if (override_slot <= kSplitSlot) {