Spring Cloud Dataflow Maven快照-如何设置更新策略？

<project>
    ...
    <dependencies>
        ...
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dataflow-maven-snapshot</artifactId>
            <version>1.2.0.RELEASE</version>
            <scope>provided</scope>
            <exclusions>
                <exclusion>
                    <groupId>*</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        ...
    </dependencies>
    ...
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <url>https://repo.spring.io/snapshot</url>
        </pluginRepository>
    </pluginRepositories>
    ...
</project>