add zk root path in config.cfg
in some case for example zk as configuration center, we only need to show the value in /config, not /, so provide this configuration will be helpful and save search time
Search enhancement
it is not necessary to search from scratch, so we should search from current node, it can save a lot of time
add zk root path in config.cfg in some case for example zk as configuration center, we only need to show the value in /config, not /, so provide this configuration will be helpful and save search time
Search enhancement it is not necessary to search from scratch, so we should search from current node, it can save a lot of time