Update git submodules

* Update upstream/fuel from branch 'stable/colorado'
  - Merge "build: Use OPNFV_GIT_SHA for ISO preparer ID" into stable/colorado
  - build: Use OPNFV_GIT_SHA for ISO preparer ID

    isoinfo -i lists the following information for Fuel@OPNFV ISO:
    "Data preparer id: 86aafaf5454a846c417848bb94f264c4420160f3"
    where the SHA hash is Fuel git repo HEAD SHA.

    For Armband's build system, using only the Fuel commit ID is not
    enough to fully describe the state of the source code, as patches
    are also applied to other fuel modules (as git submodules).
    Instead, a pointer to a valid Armband commit ID should be used.

    However, Armband overrides OPNFV_GIT_SHA to the Armband git repo
    commit hash, so the ISO metadata should also reflect this.

    While at it, allow product name to be overriden, to signal the
    commit ID should be looked up inside the Armband repository.

    Change-Id: I33ad490f1afe28c1d439dda40e39cee1955e0ac2
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit 94ea115c36d5f5c79823692ac80626cf8959b35d)

diff --git a/upstream/fuel b/upstream/fuel
index b470426..38b2256 160000 (submodule)
--- a/upstream/fuel
+++ b/upstream/fuel
@@ -1 +1 @@
-Subproject commit b47042641c215adcdce8ddaf587f23aa2215c71a
+Subproject commit 38b2256753f0fe358b8b3eecae117ba3b9e20076