Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Fix the logging to be compatible with functest

    In order to collect logs from SFC test scenarios running through
    functest framework (mainly for troubleshooting purposes),
    the logging mechanism has been updated accordingly.

    JIRA: SFC-125

    Change-Id: Ide7c32519afa6ece299d0ac1dcb168609a2e3945
    Signed-off-by: Panagiotis Karalis <pkaralis@intracom-telecom.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index f21e55e..1ec0623 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit f21e55e683f446596565caba8cf86fa15e048fd0
+Subproject commit 1ec06237327293d18c494a915faed756188447b0