Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove unused code in vyos_vrouter"
  - Remove unused code in vyos_vrouter

    Change-Id: I0fcfa886bfb5133d5e4b3face1e649e4cf8b9fc0
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 0402dfb..2cbcd32 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 0402dfb0e0a720ff0be42ac730afc25f54fef2eb
+Subproject commit 2cbcd325ce64eff9d545d70b542e099ddff7a052