Merge pull request #152 from rabbitmq/rabbitmq-server-567

Lager sink for upgrade logs

Author: michaelklishin

mk/rabbitmq-build.mk

@@ -37,7 +37,8 @@ LAGER_EXTRA_SINKS += rabbit_log \
 		     rabbit_log_connection \
 		     rabbit_log_mirroring \
 		     rabbit_log_queue \
-		     rabbit_log_federation
+		     rabbit_log_federation \
+		     rabbit_log_upgrade
 lager_extra_sinks = $(subst $(space),$(comma),$(LAGER_EXTRA_SINKS))
 
 RMQ_ERLC_OPTS += +'{parse_transform,lager_transform}' \