配置zookeeper（分布式应用程序协调服务）

<properties>
    <zookeeper.version>3.4.7</zookeeper.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
            <type>pom</type>
        </dependency>
    </dependencies>
</dependencyManagement>