Update git submodules

* Update docs/submodules/armband from branch 'master'
  - p/fuel: Rebase: openstack_ha upstream sync

    Change-Id: I87a2259ddcbc3ab69cde7a3f3e78a79dc907a5d9
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 42c5ac6..a6f5b5b 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 42c5ac6116dc7cc864325e92806ee82f1a6b6d42
+Subproject commit a6f5b5b13b3d9b62a9ee13d7bf19b695802bc5ce