Add new package: zookeeper-benchmark (#16067)

* Add new package: zookeeper-benchmark

* refine zookeeper version

* refine zookeeper version variant

* remove unused variant

var/spack/repos/builtin/packages/zookeeper-benchmark/package.py

@@ -0,0 +1,25 @@
+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class ZookeeperBenchmark(Package):
+    """It is designed to measure the per-request latency of a ZooKeeper
+    ensemble for a predetermined length of time"""
+
+    homepage = "http://zookeeper.apache.org"
+    git      = "https://github.com/brownsys/zookeeper-benchmark.git"
+
+    version('master', branch='master')
+
+    depends_on('maven', type='build')
+    depends_on('zookeeper', type=('build', 'run'))
+
+    def install(self, spec, prefix):
+        zookeeper_version = self.spec['zookeeper'].version.string
+        mvn = which('mvn')
+        mvn('-DZooKeeperVersion=' + zookeeper_version, 'package')
+        install_tree('.', prefix)