Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Print all debug messages in a second file

    All modules are allowed to print in functest.debug.log.

    Change-Id: I9c0be258dba985c9d3171bc2d324464e41e1c584
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit b1f50e31dccb8fa3badd61c57ec76b8b4abb4510)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 1e7083b..b878157 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 1e7083b512c3d821dba009acb3fec84ea63fb8a6
+Subproject commit b878157942c27d6ba50f0cafd11dfbafdc3b6a00