Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add icmp rules for clearwaterims case

    icmp rules must be enabled since a ping is used internally
    to check that other components are up and reachable

    Change-Id: I1ae3c301f30455c57193ddfe1757e971f5612c18
    Signed-off-by: Michael Pauls <michael.pauls@fokus.fraunhofer.de>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e36a14f..4a27c90 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e36a14f6db0bc5ac93469bb553810de506f29bef
+Subproject commit 4a27c90843abd3a8d002e37f0f9f22307f2ec9fc