Sample clonecli4 does Not Work Due to KVSimple not Handling SUBTREE

[geoffblandrbs]

Tested on the Java version but it looks like the same issue appears in other language versions.

The sample code for clonesrv4 adds the subtree to the the messages sent for the snapshot in the sendMessage() method. These are received as kvsimple messages by the clonecli4 code but the kvsimple code can not handle the extra subtree field in the message and returns null for the snapshot leading to no snapshot being received into the client.

Using jeromq v0.5.3.