Update git submodules

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

    https://github.com/salt-formulas/salt-formula-linux/commit/f27f436

    Change-Id: I9662dcff23c363430b6a04808f4e03617a10c160
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>
    (cherry picked from commit 5aca58b8deeec57b22249bb1d386de20ab7c2240)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index ee1ad80..0f813e5 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit ee1ad8053b03024a09955ace1709522506ae58c3
+Subproject commit 0f813e5298bc272118b055b01d6cddd3c324a4c4