Wip 10063 zafman only

This branch fixes 3 things.  

The ATTR_OBJS setting was doing 1 less attribute which is important if you want to do a quick run with only 2 objects per namespace.  The reason is that the no attribute case is always one of the attribute tests.

The check for malformed JSON actually detects the problem in bug 10063.  

The list-attr code wasn't even trying to test erasure coded objects.