Update git submodules

* Update docs/submodules/armband from branch 'stable/euphrates'
  - Merge "p/fuel: MaaS: Sync curtin template with upstream" into stable/euphrates
  - p/fuel: MaaS: Sync curtin template with upstream

    Required for future offline repository support.

    JIRA: ARMBAND-319

    Change-Id: I16767665e31c309a1a118e94302b8b43da7816f1
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit ae8e3fba7977e109fc2ef77cf2f9e9e22be767f7)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index c2cbc38..f47ae00 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit c2cbc385587fde98b0b57e80952c08ca189e63d1
+Subproject commit f47ae0048dfd49841836a70ed1a525680fe44cf5