Add config field for whther to support dynamic reconfiguration of ZooKeeper
Add config field for whther to support dynamic reconfiguration of ZooKeeper

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa