Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Switch TestCase attribute criteria to result

    It mainly avoids mixing input and output.
    Criteria is now an input set in functest/ci/testcases.yaml and then
    must be passed as __init__() args (which will be proposed in an
    additional change).

    Then it also renames the related TestCase method to
    check_result().

    Change-Id: Ifc3c8e3ea6cde7e3edf7174bed4bf2bf0894e8e3
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9d4e6cb..e620488 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9d4e6cb10fef5f0cef104861034340cda5e48a3e
+Subproject commit e620488a6747318c40eb973c2607ae6d44e95b8f