Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Allow executing tests from run_sfc_tests"
  - Allow executing tests from run_sfc_tests

    Removing it was a mistake because without it is harder to debug (e.g. using
    break points does not work when triggering tests from functest)

    Change-Id: I3a958da0add0fb57946da333f75fb526c2fe6c33
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 83f6c39..9c3b1a0 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 83f6c393d31ed6bb0105380c8c158f4a724189ce
+Subproject commit 9c3b1a031a1467baf97c4b76c94be1f68444ec7a