Unable to fetch logs during switching between fuel tabs

[Andrey Lavrentyev]

1. Install ISO
2. Create env and add nodes
3. Start OpenStack Deployment
4. While deployment is in progress, check that 'Installing Ubuntu' progress is under 90% and select 'View Logs' for any Node
5. When 'Unable to fetch logs' appears, change 'Min. level' and click 'Show'
6. Logs are displayed
7. Go back to 'Nodes' tab and repeat steps 4-7 until you get bored

Expected Behavior: Whether appropriate logs are displayed or not, and switching between tabs shouldn't affect that

Actual Behavior: Logs are not displayed, and logs are displayed after changing level mode

ISO version: fuel-8.0-147-2015-11-11_07-42-00.iso

Some video on steps above: https://drive.google.com/a/mirantis.com/file/d/0B5HPBFb7K7gXTXdKcHRqMXJ0WGM/view

# fuel fuel-version
api: '1.0'
astute_sha: 959b06c5ef8143125efd1727d350c050a922eb12
auth_required: true
build_id: '147'
build_number: '147'
feature_groups:
- mirantis
fuel-agent_sha: 07560a9fc3ce5301ace04d2d3e5d68db6ee4f8d5
fuel-createmirror_sha: d3949f3094248b9686a4c20caea5ae13c9738a8d
fuel-library_sha: a94bddc9ae6198510402a42ad78699cb9d70fda8
fuel-nailgun-agent_sha: 00b4b11553c250f22c0079fb74c8b782dcb7b740
fuel-nailgun_sha: fe7fe7d082b4045d34e9b2d9aac6766dbd6cd576
fuel-ostf_sha: f771e23c5cbecbbb578ee4574ae2e51aa2e91819
fuel-upgrade_sha: 1e894e26d4e1423a9b0d66abd6a79505f4175ff6
fuelmain_sha: 3b64b95f6b513b0d46b57525a858eea7a9809da3
fuelmenu_sha: f40c3ec0e0e1bdc499f4cb50d46aecefb4dbb7c7
network-checker_sha: a57e1d69acb5e765eb22cab0251c589cd76f51da
openstack_version: 2015.1.0-8.0
production: docker
python-fuelclient_sha: a88bc94b562ee511eb277183d0a750a1e3312662
release: '8.0'
release_versions:
  2015.1.0-8.0:
    VERSION:
      api: '1.0'
      astute_sha: 959b06c5ef8143125efd1727d350c050a922eb12
      build_id: '147'
      build_number: '147'
      feature_groups:
      - mirantis
      fuel-agent_sha: 07560a9fc3ce5301ace04d2d3e5d68db6ee4f8d5
      fuel-createmirror_sha: d3949f3094248b9686a4c20caea5ae13c9738a8d
      fuel-library_sha: a94bddc9ae6198510402a42ad78699cb9d70fda8
      fuel-nailgun-agent_sha: 00b4b11553c250f22c0079fb74c8b782dcb7b740
      fuel-nailgun_sha: fe7fe7d082b4045d34e9b2d9aac6766dbd6cd576
      fuel-ostf_sha: f771e23c5cbecbbb578ee4574ae2e51aa2e91819
      fuel-upgrade_sha: 1e894e26d4e1423a9b0d66abd6a79505f4175ff6
      fuelmain_sha: 3b64b95f6b513b0d46b57525a858eea7a9809da3
      fuelmenu_sha: f40c3ec0e0e1bdc499f4cb50d46aecefb4dbb7c7
      network-checker_sha: a57e1d69acb5e765eb22cab0251c589cd76f51da
      openstack_version: 2015.1.0-8.0
      production: docker
      python-fuelclient_sha: a88bc94b562ee511eb277183d0a750a1e3312662
      release: '8.0'
      shotgun_sha: 25dd78a3118267e3616df0727ce746e7dead2d67
shotgun_sha: 25dd78a3118267e3616df0727ce746e7dead2d67

[Julia Aranovich (jkirnosova)]

Logs could not be fetched when switching to Logs tab, because UI redirects to fuel-agent logs in case of provisioning node: https://github.com/openstack/fuel-web/blob/master/nailgun/static/views/cluster_page_tabs/nodes_tab_screens/node.js#L51-L52