Format namenode and zkfc using noninteractive mode and honour return
Patch requires BIGTOP-1634 to be applied to apply itself. Is totally back-portable to old logic if required.
+1. Michael Weiser would you mind creating a patch for the current state of Bigtop and update BIGTOP-1634? I can then commit this bit. Thanks!
here's the updated patch
+1 and committed!