ACCUMULO-2012 Cloning accumulo.metadata works, accumulo.root will have a better error
ACCUMULO-1591 Master and Logger will fail out if secrets mismatch (tserver already does)
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT
Merge remote-tracking branch 'origin/1.5.1-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge remote-tracking branch 'origin/1.6.0-SNAPSHOT'