Update git submodules

* Update docs/submodules/armband from branch 'master'
  - u/fuel: Bump & rebase for libvirtd group fix

    JIRA: ARMBAND-335

    Change-Id: Id42d3719dff18ef6948c1c2c18b48c8ac2b2d195
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 466a4c3..67d2ec6 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 466a4c3252e17370ed4d9d7c854738b26dbf1df1
+Subproject commit 67d2ec64a4dd0b265cc92ae0ee0562e88cb9539e