Update git submodules

* Update docs/submodules/armband from branch 'master'
  - baremetal: HA: Standalone openstack_ha state

    TODO:
    - re-check states;
    - investigate tenant telemetry support;
    - re-check prx node config;

    Change-Id: Iff53537b9e78696dd16c2339996f2bd3771074aa
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 6a9754a..5bb188f 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 6a9754a949105a68b0e4fe8a34fca73809d736d5
+Subproject commit 5bb188f21ed7bed7a13e522eb9e711f95b5cb979