Update git submodules

* Update docs/submodules/sfc from branch 'stable/euphrates'
  - Produce more logs if things fail

    Apex deployment shows a problem when creating the SFC config in ODL and
    it is impossible to know what might be going on

    Change-Id: If8d33d1c60daaf9cd9773a5cb9c7e47f64e1caa9
    Signed-off-by: Manuel Buil <mbuil@suse.com>
    (cherry picked from commit f19a910411260203ff33d290e7460a296f5786fc)

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 93021a9..6ac610d 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 93021a983853d260d8e48ba6279c7c45bfe3fe0a
+Subproject commit 6ac610dd796ac39a211a39e54af95f810c0ff813