Add *HDFS3 sink connector guide* (#5239)
Add *HDFS3 sink connector guide* (#5239)


merlimat/pulsar,massakam/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,merlimat/pulsar,massakam/pulsar,massakam/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,yahoo/pulsar