Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Add the needed functest files

    As agreed with the functest project, we keep the Dockerfile
    and testscases.yaml in our repo

    Change-Id: Idb25d4bfff7e36b42e4981a138775f90b0fbe72e
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index b8e171c..b5e4dd9 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit b8e171c36bdc86c6a45978285ef67cb6f3075b87
+Subproject commit b5e4dd95cd0d4c147aaaac90dd421560d809a67c