fix(registry): silence confd errors from boot

Author: Matthew Fisher

registry/bin/boot

@@ -45,7 +45,7 @@ etcd_set_default protocol http
 etcd_set_default bucketName ${BUCKET_NAME}
 
 # wait for confd to run once and install initial templates
-until confd -onetime -node $ETCD --confdir /app --interval 5 --quiet; do
+until confd -onetime -node $ETCD --confdir /app --interval 5 --quiet >/dev/null 2>&1 ; do
 	echo "registry: waiting for confd to write initial templates..."
 	sleep $(($ETCD_TTL/2))  # sleep for half the TTL
 done