Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Fix snaps commit id

    Snaps is part of main Functest testcases (Healthcheck).
    A fixed version has to be pulled.

    We will switch later to snaps packages instead of commit ids.

    Change-Id: I8df681625864ed6929e28b37c574b8d89c7de409
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 8d896c9..49573e3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 8d896c9529c7711b86cdc963b26a14c22688f12e
+Subproject commit 49573e34fff7298605db07746add061ad3b1fff5