nodes status show incorrect nodes count after deployment

[Artem Hrechanychenko]

Detailed bug description:

After deployment one more standalone-rabbit node to existing cluster with 3 standalone-rabbit nodes, logger show that only 3 standalone nodes are present:
http://paste.openstack.org/show/491856/

Steps to reproduce:
Scenario:
            1. Revert snapshot separate_rabbit_service
            2. Add one rabbit node and re-deploy cluster
            3. Run network verification
            4. Run OSTF <<<bug displayed after end of ostf sanity
            5. Check hiera hosts are the same for
               different group of roles
            6. Delete one rabbit node
            7. Run network verification
            8. Run ostf
            9. Check hiera hosts are the same for
               different group of roles

Expected results:
4 standalone-rabbit nodes in cluster shows by nodes info logger

Actual results:
3 standalone-rabbit nodes in cluster shows by nodes info logger

Reproducibility:

https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.plugins.thread_2_separate_services/57/console