ACCUMULO-2742 offset history command by one

The history entries returned by the history command are 0-indexed,
while the history expansion is 1-indexed. We need to offset the index
when we print it so that users can accurately use event expansion.
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2752 Adding accidentally omitted getZooKeeperPort method
Merge branch '1.6.0-SNAPSHOT'