ACCUMULO-2660 handle invocation ex in dfslogger
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2171 Include ReadWriteIT (SunnyDay) tests in release:prepare
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2482 add units to error msg on ZK retries

Signed-off-by: Bill Havanki <bhavanki@cloudera.com>
Merge branch '1.4.6-SNAPSHOT' into 1.5.2-SNAPSHOT
Merge branch '1.5.2-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge branch '1.6.0-SNAPSHOT'