Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Print stack when catching exceptions in run_tests.py"
  - Print stack when catching exceptions in run_tests.py

    Change-Id: Id94475dd519ce04b87da470f6e6bb5a1c1aa2d75
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d4ccab3..ec4514f 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d4ccab3e956166787dc140b64b5b2a96669aa93b
+Subproject commit ec4514f240836129d5f3c25b4708d73a65b9cb60