Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Filter only on scenarios if possible

    If a scenario is defined, setting installers as dependencies makes
    the maintenance more difficult.

    Change-Id: I3d0dc51ec3b9ccf3270ad1ec8253d6ee7e4a99a0
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7c8d58f..38c6739 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7c8d58fbe548f94c6cecfef7afc66270b395d6e9
+Subproject commit 38c67396839738cb319c797aa35fb50ec892b053