Updated armband

Updated armband
Project: fuel  748b18088106826dd9cc9a26d26e1aa359ff67b6

Provide access to mgmt network from host level

Functest framework is trying to access internal endpoints from host
level which currently is not possible in virtual deployments. Move mgmt
network to untagged interface and setup IP address from mgmt subnet on
the linux bridge where mgmt traffic is traversing.

There will be corresponding changes in securedlab repository.

JIRA: FUEL-167

Change-Id: I29b8ebb23a64e39a4e56b27639a87ce2386b9774
Signed-off-by: Michal Skalski <mskalski@mirantis.com>