Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Unlink run_tests from constants"
  - Unlink run_tests from constants

    run_tests.py doesn't read any functest config file what is mandatory
    for xtesting.

    Change-Id: I49f672c54a606acead75f573d1ce496c81fb235a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 17049b6..8073104 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 17049b67f1085492d83837da99ca245174d40db5
+Subproject commit 8073104c142f7e005bba18c96999a11af745fd95