Test failed by verify_networks error

[Mikhail Samoylov]

During swarm run at jobs:
https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.network_templates/130/console
https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.bonding_ha_one_controller/128/console
https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.bonding_ha_one_controller/128/testReport/%28root%29/offloading_bond_neutron_vxlan/
https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.network_templates/130/console

There were error:
Task 'verify_networks' has incorrect status. error != ready, ''

In astute logs:
2016-05-31 23:24:45 INFO [29474] Casting message to Nailgun:
{"method"=>"verify_networks_resp",
 "args"=>
  {"task_uuid"=>"fc80ee89-d0df-481e-bfae-82022af59500",
   "status"=>"ready",
   "progress"=>100,

But nailgun show status as:
17 | error | verify_networks | 1 | 100 | fc80ee89-d0df-481e-bfae-82022af59500

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