Update git submodules

* Update docs/submodules/armband from branch 'stable/euphrates'
  - u/fuel: Bump & rebase for apache state revert

    Change-Id: I65c7d74af470953a2b62caddc3bc6be27df3879a
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit a63e41a621f1e558241f0a1e58ef75ea2a57c480)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index dc2ea6b..7221dfc 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit dc2ea6bbe10209d746577097b42c8c6007cd1aaf
+Subproject commit 7221dfc3c2e00fc3e64e545277d7b3a8cde55a75