Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Clean run_tests.py and the related ut"
  - Clean run_tests.py and the related ut

    It enhances run_tests.py as proposed in [1].
    It also prints all skipped tests in summary and fixes copyright
    headers. All the related unit tests have been updated too.

    [1] https://jira.opnfv.org/browse/FUNCTEST-832

    JIRA: FUNCTEST-832
    Change-Id: I59b96422bc7942ecd6270c45ab7a3fb603c13ccb
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 55edeaa..c582427 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 55edeaa617a25dffae699b9b5b5b4f61e7856fd6
+Subproject commit c582427bd2586347fd21bcee3b28a2f7e75faf3d