Update git submodules

* Update docs/submodules/armband from branch 'stable/fraser'
  - u/fuel: Bump & rebase for openstack fix

    Change-Id: I5d48b6cd8ad2b1d602ed86d5d1f69a0a806bc170
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>
    (cherry picked from commit 6657baa68d238e1cba9e1d69118616e438b07f37)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index e7796e2..b3c8e34 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit e7796e2e5837c3dc25d04a70dfa1d75a7ca69c65
+Subproject commit b3c8e34c2f14000fdd442e8fe7d2fddfa11f941c