Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Stop using a forked obsolete repo

    It leverages on the official clearwater live test instead.
    It now parses the output directly.

    Change-Id: Ia7746c13362323daf72b3536d294401f0b7ae42f
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index f7b6a9a..0c55898 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit f7b6a9a8d69313bbb8203eaf25b2d78d86ae799c
+Subproject commit 0c55898253147b8fb6e5ef1afbf6f462a5b343b5