Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Stop cloning when running vyos_vrouter"
  - Stop cloning when running vyos_vrouter

    It moves the clone operation into docker build instead.

    Change-Id: I296005d8638510a999665d383a26c4fcd48897a6
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a69d6de..754de76 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a69d6de9e915730ea404ecc2a37d227088c31471
+Subproject commit 754de76199dcb9f78ce35ab1323b4c2cbd40e3dc