Mcollective problem with nodes on cluster with network template

[Sergey Galkin]

Steps to reproduce
1. Install Fuel
2. Login to Fuel UI and create env with 5 nodes on VLAN with Ceph (env 2 in my case)
3. ssh to Fuel
4. upload to Fuel node attached env-14-template.yaml as /tmp/2/network_template_2.yaml
5. Execute fuel network-template --env 2 -u --dir /tmp/2/ (And get JSONDecodeError from https://bugs.launchpad.net/fuel/+bug/1490540)
6. Deploy cluster

Deploy failed with error

Mcollective problem with nodes [{"uid"=>"6", "error"=>"Node not answered by RPC."}, {"uid"=>"7", "error"=>"Node not answered by RPC."}, {"uid"=>"8", "error"=>"Node not answered by RPC."}, {"uid"=>"9", "error"=>"Node not answered by RPC."}, {"uid"=>"10", "error"=>"Node not answered by RPC."}], please check log for details

Please check the template. All nodes in cluster should have
- eth0 - Public
- eth2 - Admin (PXE), Storage (VLAN 141), Managment (VLAN 120)
- eth3 - Private (VLAN 441-459)

api: '1.0'
astute_sha: 53c86cba593ddbac776ce5a3360240274c20738c
auth_required: true
build_id: 2015-08-23_15-01-12
build_number: '219'
feature_groups:
- mirantis
fuel-agent_sha: 4c2ab9d6c623d345086c6e2874d1df81fd96a942
fuel-library_sha: 3a3ea6d9849bc1ba35c1bd882f0a0678b20d2e51
fuel-nailgun-agent_sha: e01693992d7a0304d926b922b43f3b747c35964c
fuel-ostf_sha: 16839cbf471b7142b04c0d2c2d94786bc486fefe
fuelmain_sha: a494e6628319abfef57e1754f6453cf8f1a4bc65
nailgun_sha: 7790ce872512ecdf21689e6a5f970dd7119febdb
openstack_version: 2015.1.0-7.0
production: docker
python-fuelclient_sha: fc7b63aa6900fe3b2c183108ba6a13e868bc0472
release: '7.0'