Update git submodules

* Update docs/submodules/armband from branch 'stable/euphrates'
  - u/fuel: Bump & rebase for Ubuntu `modprobe -f` fix

    Squash in additional changes:
    - p/fuel: Retry armband state, fail on not connected
    - u/fuel: Bump & rebase for wait_for changes

    While at it, catch armband state minion timeout (not connected or no
    response) and reduce armband state retry from 10 to 5.

    We no longer expect the armband state to fail on any nodes,
    baremetal or virtual, kvm or cmp, so remove failsafe `|| true`
    and retry state apply in case minions did not repond.

    JIRA: ARMBAND-350

    Change-Id: I7b4302a89d60c94ab3f58cd6b8523cf668314a05
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commmit 6eab8c989c257213586347f284362cc43f99d3f4)
    (cherry picked from commmit 29c39fd5a8fc8a4bb058b5c18a6c1d6a29544f4f)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 22f9c97..91d249e 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 22f9c97db5345d47768ae0552f9f175a5b3356ce
+Subproject commit 91d249e3087014902930e2475facd40077d3aedd