Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Avoid duplicating tempest section in rally.conf

    Change-Id: I79598cce2c7dfe0a2e969ddd32735c3eb189fa7a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 8b912cec489a96178fcac5667c03e20850149c3a)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5af20a4..9ee6578 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5af20a463fb35d73a8be77715af6d91a00834ef0
+Subproject commit 9ee6578f53897adfb08fb810d243b35bd1ed2b23