Update git submodules

* Update docs/submodules/armband from branch 'master'
  - u/fuel: Bump & rebase for debian_ip lowercase fix
    
    While at it, revert commit adding "opnfv" user to "libvirt" group,
    as it would break with the current event flow (opnfv user being
    created prior to libvirt group).
    
    Change-Id: I6f5d578153c33dcddac76bc7bc6b428fe6796b1a
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/armband b/docs/submodules/armband
-Subproject a7bc88387c4ffa25b12df949a1dce4c09041433
+Subproject 4b7e790d335787ce0837ca47025dd7a14287e52