Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Use block=True to avoid race conditions

    If we do things asynchronously, the instance might not be ready and the
    information we get is not complete (e.g. port missing). Using block=True
    fixes the problem

    Change-Id: I9f90f52656553b8da8697477250ed631be884196
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 9ff67de..084ae51 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 9ff67de3c3857c7d3bc075133e0da822e455880a
+Subproject commit 084ae518236709071f04f3d6e750f0821c3e51bb