Mcollective hearbeat failed: rabbitmq.rb:50:in `on_hbread_fail'

System test 'deploy_ha' ( Ubuntu thread_5 ) has failed while cluster was deploying with the following error in the mcollective.log on node slave-02:

E, [2014-08-15T07:18:17.479550 #1116] ERROR -- : rabbitmq.rb:50:in `on_hbread_fail' Heartbeat read failed from 'stomp://mcollective@10.108.35.2:61613': {"lock_fail"=>true, "lock_fail_count"=>1, "ticker_interval"=>29.5, "read_fail_count"=>0}
D, [2014-08-15T07:18:24.202553 #1116] DEBUG -- : rabbitmq.rb:66:in `on_hbfire' Publishing heartbeat to stomp://mcollective@10.108.35.2:61613: send_fire, curt1408087104.20195last_sleep30.4989078044891
E, [2014-08-15T07:18:37.539039 #1116] ERROR -- : rabbitmq.rb:30:in `on_miscerr' Unexpected error on connection stomp://mcollective@10.108.35.2:61613: es_oldrecv: receive failed: Connection timed out

ISO #446 (#439 failed with the same error on this test):
{"build_id": "2014-08-17_02-01-17", "ostf_sha": "d2a894d228c1f3c22595a77f04b1e00d09d8e463", "build_number": "446", "auth_required": true, "api": "1.0", "nailgun_sha": "bc9e377dbe010732bc2ba47161ed9d433998e07b", "production": "docker", "fuelmain_sha": "08f04775dcfadd8f5b438a31c63e81f29276b7d3", "astute_sha": "8e1db3926b2320b30b23d7a772122521b0d96166", "feature_groups": ["mirantis"], "release": "5.1", "fuellib_sha": "81741445d4ab2db198585149815bb80a238a1214"}