"python-keyczar is required for accelerated mode"

On local command server and remote node that is: when missing on the command server, a warning is issued;
the warning generated on the remote node by the accelerate module is however not given back to the user, it might be nice to be more verbose about that?

No local mode involved, I just mean that both ansible-playbook​ (running locally) and the remote node running the accelerate module both need python-keyczar, but a warning is only got from ansible-playbook locally, whilst it doesn't report that from the remote moduie