Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add unit tests for odl_sfc

    Change-Id: I8eb037a8c2427695d42207897064b79cb2b03a5d
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 70b1313..72c085a 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 70b1313fe9528a72fab966ab69e7d784e40653d5
+Subproject commit 72c085ac3fde2a294a09b2065e1fe38a33f8841c