Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Simplify functest/cli/commands/cli_env.py

    CONST shouldn't be used for getting/setting env vars.
    It adds complexity and may raise side effects.

    It also removes the obsolete env var CI_DEBUG.

    Change-Id: I8a8fde0fa781351d5eabd2698ca8aae9dee76fb8
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index b1522c3..9e9e8c9 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit b1522c34d95f9bb48fc9cfca91f281da2f958953
+Subproject commit 9e9e8c9b89fc7c419d1824190217897118800275