Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix pylint warnings in testcase_base"
  - Fix pylint warnings in testcase_base

    It takes into account the following warnings:
      - bare-except
      - unused-argument
      - broad-except

    Change-Id: I3a50bf6d07823edc80a7f0f78f46681ace7f4a39
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index dcf1e07..02d4be0 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit dcf1e078e3ffde4ed57c0cc6da05534ab419ca22
+Subproject commit 02d4be03f24ec45bdb77c2dc4cc3ebd46fdb5ee4