RabbitMQ Cluster: make quorum default queue type (#1238)

Make sure that durable queues are quorum instead of classic (see
rabbitmq/rabbitmq-server#14763).

WARNING: this does not enforce queue type. Certain queue parameter may
lead to a different type (e.g. exclusive queue are always classic)

Related issue/s
* #1232

Author: YuryHrytsuk

services/rabbit/configs/rabbitmq.conf.j2

@@ -23,3 +23,7 @@ quorum_queue.initial_cluster_size = {{ RABBIT_QUORUM_QUEUE_DEFAULT_REPLICA_COUNT
 # https://www.rabbitmq.com/docs/networking#proxy-protocol
 # WARNING: this forces clients to use a proxy (direct access to nodes does not work)
 proxy_protocol = true
+
+# Set the default queue type to quorum to benefit from RabbitMQ Cluster
+# (to be highly available by default). This does not enforce queue type though
+default_queue_type = quorum