Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove list_zones() which requires dns"
  - Remove list_zones() which requires dns

    Change-Id: I271545a654a1a508c8b47a3fa4dcf72ad314a154
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7597d0a..3c854fc 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7597d0af5d3e25e9f0eccc74eb4e904f3389332d
+Subproject commit 3c854fc8d2f9e00b089b724db87925b3c7c4635a