feat(sentinel-transport)：make command center thread daemon

[wutingjia]

Describe what this PR does / why we need it

make sentinel client close resources more easier and elegant

Does this pull request fix one issue?

#2178

Describe how you did it

make commad center thread daemon

Describe how to verify it

Special notes for reviews

[CLAassistant]

All committers have signed the CLA.

[Anilople]

There are many place use com.alibaba.csp.sentinel.concurrent.NamedThreadFactory.NamedThreadFactory(String), how about change them all to daemon in this PR?

For example:

Sentinel/sentinel-cluster/sentinel-cluster-client-default/src/main/java/com/alibaba/csp/sentinel/cluster/client/NettyTransportClient.java

Line 65 in 2c12b07

new NamedThreadFactory("sentinel-cluster-transport-client-scheduler"));

Sentinel/sentinel-cluster/sentinel-cluster-server-default/src/main/java/com/alibaba/csp/sentinel/cluster/flow/statistic/concurrent/expire/RegularExpireStrategy.java

Line 69 in 2c12b07

new NamedThreadFactory("regular clear expired token thread"));

Sentinel/sentinel-extension/sentinel-datasource-nacos/src/main/java/com/alibaba/csp/sentinel/datasource/nacos/NacosDataSource.java

Line 50 in 2c12b07

new ArrayBlockingQueue<Runnable>(1), new NamedThreadFactory("sentinel-nacos-ds-update"),

Sentinel/sentinel-extension/sentinel-datasource-zookeeper/src/main/java/com/alibaba/csp/sentinel/datasource/zookeeper/ZookeeperDataSource.java

Line 40 in 2c12b07

new ArrayBlockingQueue<Runnable>(1), new NamedThreadFactory("sentinel-zookeeper-ds-update"),

Sentinel/sentinel-demo/sentinel-demo-dubbo/src/main/java/com/alibaba/csp/sentinel/demo/dubbo/demo2/FooConsumerBootstrap.java

Line 51 in 2c12b07

new NamedThreadFactory("dubbo-consumer-pool"));

Sentinel/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/NettyHttpCommandCenter.java

Line 42 in 2c12b07

new NamedThreadFactory("sentinel-netty-command-center-executor"));

[linlinisme]

LGTM!

[sczyh30]

For demo maybe it's not needed (waiting may be needed)?

[sczyh30]

Thanks for contributing.