add gitignore
add gitignore

ewhauser/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,pengweiqhca/zookeeper,ewhauser/zookeeper,ewhauser/zookeeper