Description of problem:
It turns out that reducing number of rabbitmq queues in cluster significantly  improves performance of cluster especially in the case of failover recovery time. Right now cluster uses ha-all mode for rabbitmq queues, I suggest to change this to ha-exactly mode and reducing number of queue copies to ceil(N/2) where N is number of controllers in the cluster - so in typical scenario of 3 controller It would be 2.
It does not make much sense to keep the copies of queues over whole cluster since if the quorum of nodes is lost then the rest of cluster nodes will be stopped anyway.
This current setting:
pcs resource show rabbitmq
 Resource: rabbitmq (class=ocf provider=heartbeat type=rabbitmq-cluster)
  Attributes: set_policy="ha-all ^(?!amq\.).* {"ha-mode":"all"}"
And I am requesting to change the parameters of rabbitmq pacemaker resource to:
pcs resource show rabbitmq
 Resource: rabbitmq (class=ocf provider=heartbeat type=rabbitmq-cluster)
  Attributes: set_policy="ha-all ^(?!amq\.).* {"ha-mode":"exactly","ha-params":2}"
According to my tests, I achieved to reduce recovery time singificantly.