Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Remove module references __file__

    It allows functest to be run directly from a zip file [1].

    [1] https://setuptools.readthedocs.io/en/latest/setuptools.html#setting-the-zip-safe-flag

    Change-Id: I596a71e8cf2bed6dd79655bd5beeb047876a188c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 644d4c5..997969d 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 644d4c54bab9939da3ef2b1655092c7e4981f57d
+Subproject commit 997969d3d79bcebf13aeae8763b2c9747df03702