Update git submodules

* Update docs/submodules/armband from branch 'master'
  - p/fuel: Fix ga-16.04 MaaS kernel to be hwe-edge

    While at it, bump & rebase for ODL VM memory bump & Pike staging PPA,
    handle architecture list for pike-staging PPA.

    Change-Id: I13cdeef0ae2167ff1b7e6dd9c188dfbdcf18d9a1
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 46040c0..da4a72b 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 46040c0ab85aeba942b7ec7897b32243f859aac0
+Subproject commit da4a72b2ee47253ae763752254fbd049155d941e