Maven plugin updates
Maven plugin updates

- io.fabric8:docker-maven-plugin ................... 0.30.0 -> 0.31.0
- maven-jar-plugin ................................... 3.1.2 -> 3.2.0
- maven-source-plugin ................................ 3.1.0 -> 3.2.0

marcelmay/hadoop-hdfs-fsimage-exporter,marcelmay/hadoop-hdfs-fsimage-exporter