Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Fix rtd requirement order

    Change-Id: Ie2fbd978ed0bb9772d66eb367f1bdad32c5afd61
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 10d98efb0cc45e989beceda411ce615347b2a946)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5dbf286..a4d1717 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5dbf286fbc29bf36ea1d4567d033efb997a3c7ab
+Subproject commit a4d1717626dfa349c66ea48704dcb3723469c5e9