Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Update Xtesting to 0.34.0

    It mainly fixes negative regex operations and allows calling one
    skipped test via run_tests (parallel testing).

    Change-Id: Ibf34ecf2dae46c4c3af15d05af2946c9eb33f6cd
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index c09efa8..7b64993 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit c09efa8991bab081c53682cecfb2dce8fb5dc0a7
+Subproject commit 7b64993e32b58364a6b59672d5a6dd4d2b5087e4