Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Refactor the Feature framework

    run() returns the expected status code (see following JIRA tickets).
    repo, pre() and post() are removed as they were quite useless.
    A dedicated class is proposed for bash programs.
    Unit tests have been added to fully cover this module.

    All features have been modified to conform with these modifications.
    It also removes the decorators which skipped several unit tests.

    JIRA: FUNCTEST-778
    JIRA: FUNCTEST-779
    JIRA: FUNCTEST-780
    JIRA: FUNCTEST-781

    Change-Id: Ifb1e4c4f68260a4e20d895f67f07f369ca959374
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 96bacd7..8882715 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 96bacd7d8ffb9c05672c0a1fc6e68d19e4a6793a
+Subproject commit 888271575907898d80081e69b37f879091a636fc