Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Set default value for CONFIG_FUNCTEST_YAML"
  - Set default value for CONFIG_FUNCTEST_YAML

    It calculates via the full path of env.py.

    Change-Id: Ief958833f5116cdb116d0153d85a0ae03063ec5c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 6f70bd1..efbe74c 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 6f70bd17b238e3c931f5d575e4b8eb625dbca91d
+Subproject commit efbe74c4cc1b6b6982e9e13950319f690541d6a3