Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "patches: Squash maas region changes"
  - patches: Squash maas region changes

    When re-deploying with `-f` flag, `patch -R` cannot cleanly revert
    maas region changes with overlapping context lines, so squash them
    into a single file.

    Change-Id: I87dae72a12fea833e9e6729de21d4ce5f262695e
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 3443d06..0892eb1 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 3443d06f324b5d2b6d8d3abeda17448d411abf1e
+Subproject commit 0892eb16c1785703adfb14a5fdea3eb7201d15b7