Mongo deployment is failed with error Error: couldn't connect to server 10.109.7.5:27017

[Tatyanka]

Scenario:
1. Create a cluster
2. Add 3 nodes with controller and mongo roles
3. Add 2 nodes with compute and cinder roles
4. Deploy the cluster
5. Verify that the deployment is completed successfully

Actual:
Mongo deployment failed
http://paste.openstack.org/show/412483/

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "7.0"
  openstack_version: "2015.1.0-7.0"
  api: "1.0"
  build_number: "156"
  build_id: "2015-08-10_17-24-26"
  nailgun_sha: "9a6ac9b08733ded67bc65345a37787886ff4249d"
  python-fuelclient_sha: "ec5c02b3848fe1d15e5b50b323c3dda030f8e1ac"
  fuel-agent_sha: "57145b1d8804389304cd04322ba0fb3dc9d30327"
  fuel-nailgun-agent_sha: "e01693992d7a0304d926b922b43f3b747c35964c"
  astute_sha: "e1d3a435e5df5b40cbfb1a3acf80b4176d15a2dc"
  fuel-library_sha: "c4b2b9a1b464d7f538635cbfc9304a714ededc41"
  fuel-ostf_sha: "c7f745431aa3c147f2491c865e029e0ffea91c47"
  fuelmain_sha: "826387d1a05a40e4849433598442024bb1e3b7c7"