Update git submodules

* Update docs/submodules/armband from branch 'stable/euphrates'
  - u/fuel: Bump to opnfv-5.0.2

    Change-Id: I168b916e77aeb219440af6aff3f44233c4005ac3
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit 19673e1a4c8a7cadfc49e4f8cd5b945f26a5ed04)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index d8e1b37..006db47 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit d8e1b37313cb79adba792500ba6566be903b7d57
+Subproject commit 006db47f3a00933570a8446c7dc9fc723f5e7c5f