Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [maas] Override broken default main_archive URL

    Upstream reclass.system introduced a regression for us in [1].

    [1] https://github.com/Mirantis/reclass-system-salt-model/commit/99490e7d

    Change-Id: I5cedcbb5c528a8bf59b4f917b422ed433d2ceea3
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index ce86651..44497fa 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit ce86651f68402b7ba8ac193461957b1088696c63
+Subproject commit 44497faea2b2eda0d42c8f95bd3883f68f5f35b8