Update git submodules

* Update docs/submodules/fuel from branch 'stable/fraser'
  - [patch] Rebase keyserver proxy support

    Rebase on top of [1].

    [1] https://github.com/salt-formulas/salt-formula-linux/commit/6f5e69e

    Change-Id: Ic34bb9c1fad8778262f2e876c91667e903d143bf
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit 79e32c8cc5631204d2e5b0b328c954a2a2197037)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 832cf66..7e44402 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 832cf66ab95fbc74bf33a5b271869d0d948b4378
+Subproject commit 7e44402abfc0bb8e314109ef4746405755e43d42