Add AAE test

This test verifies that AAE repairs replicas of values without passive
read repairs. This includes missing replicas and replicas with divergent
values.  It will also repair entire KV partitions lost, and if
configured for trees to rebuild, it will recover from AAE data loss and
corruption.

This requires the riak_kv change in https://github.com/basho/riak_kv/pull/834