Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Fix flake8 problems

    There was a bug in releng and pylint was not ran, some issues got merged
    in master because of that

    Change-Id: Icf3fa882f4f2b0593fa0b85edce46e49dcc303c9
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 9dda531..cc16df5 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 9dda531e8e9be93b930b89d45a395085fbcb61cc
+Subproject commit cc16df5b8317d46e06f4331edf602eaa2a77acbf