fix a few more constants in zookeeper_base.rb
fix a few more constants in zookeeper_base.rb

songling88/zookeeper,zk-ruby/zookeeper,rickypai/zookeeper,zk-ruby/zookeeper,rickypai/zookeeper,rickypai/zookeeper,songling88/zookeeper,zk-ruby/zookeeper,songling88/zookeeper,rickypai/zookeeper,songling88/zookeeper