bodhi: Switch to the new callback for beta2

Signed-off-by: Randy Barlow <randy@electronsweatshop.com>

roles/bodhi2/base/templates/fedora-messaging.toml.j2

@@ -12,7 +12,7 @@ passive_declares = true
 {# If bodhi_message_routing_keys is defined, this must be a consumer so let's also set up the consumer
    config. #}
 {% if bodhi_message_routing_keys is defined %}
-callback = "bodhi.server.consumers:messaging_callback"
+callback = "bodhi.server.consumers:Consumer"
 {# End consumer config if statement #}
 {% endif %}