Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Fix wrong logging of the server-instance ip"
  - Fix wrong logging of the server-instance ip

    Change-Id: I9b16297804f6b4185835336668766f7f1a8313cc
    Signed-off-by: Dimitrios Markou <mardim@intracom-telecom.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index a40da17..bba8bc0 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit a40da17faa6c0d2c7d2dcf43076c6a5b8491df4a
+Subproject commit bba8bc08fbcbf5f72f40ea6133dbb61263215501