Update git submodules

* Update docs/submodules/armband from branch 'master'
  - p/fuel: Fix eth name for enp2s0 (was enp2s2)

    Previous rebase introduced a regression in VM eth naming on AArch64.
    enp2s2 should have been enp2s0, so fix that up.

    Change-Id: If831dffce472750516dfa6b69cdc3a7952a3427d
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 56667c6..19ff638 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 56667c6c04fd2f11e8ac5b2637a837d91cf5b884
+Subproject commit 19ff638dcd1059fbb09f3b5d931f38f84791ec28