Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Use different config files depending on version

    We can read the openstack version from the env variables and then use
    a different config. The reason we use this is because openstack API
    changed from Pike to Queens and Pike is the official version for
    OPNFV Fraser release

    Change-Id: I8a94e71224d2ba0aa75a6438f3d7b03929acbbef
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 8e85dae..a459dee 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 8e85daee26c523cd181f5884858646b7589c50af
+Subproject commit a459dee88ba00d6f8283232ce2159594ae23d22a