Update git submodules

* Update docs/submodules/armband from branch 'master'
  - u/fuel: Bump & rebase for mcpcontrol CIDR change

    Stop overriding MaaS IP in mcpcontrol, keep same value as Fuel@OPNFV
    has (10.20.0.3).

    Change-Id: I4789aef378204fdbcf53355c62a9a289b200987c
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 9519a11..e7ea434 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 9519a11e1fe0eb26cf5b776d8479065f2f710737
+Subproject commit e7ea434b3278d1fdaa8cd26f22d53c735d53b9ac