Java Modules

[Mike Miller]

Opening up a discussion about Zookeeper using Java Modules (JPMS)
introduced in Java 9.  I noticed there was no Automatic-Module-Name set in
the Jar so I opened up a ticket:
https://issues.apache.org/jira/browse/ZOOKEEPER-3625
There is some interest in Accumulo for using modules, but I think we are
some time away before that happens.  We have put some notes and comments
about it here:
https://github.com/apache/accumulo/issues/1434