Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add suffixes in vnf keypair names

    Change-Id: Ia9c8ef535b16326a520367d2c7c98b7e8db4822c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d589e4e..3beed1c 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d589e4e5345ed82c68d9a011ac89f8cdbefe2ca3
+Subproject commit 3beed1cd99ae8727441e7b7afcd6e6afc2bb7afb