Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - remove icmp rules from secgroups

    Change-Id: I8f7d2170eee9777be6455d38eaff703338b155fa
    Signed-off-by: Michael Pauls <michael.pauls@fokus.fraunhofer.de>
    (cherry picked from commit c93ae73855ba928eb6661ac2468c5a0bae7c5506)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7a1e0df..8d316d0 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7a1e0df15bdd7a88c0e6df769b933e063e2359fe
+Subproject commit 8d316d09a8794630b9290873658515e656e09d98