Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Print the stack traceback when cleaning"
  - Print the stack traceback when cleaning

    Change-Id: I8279844f0e42378b4fe550696608054cd7418a12
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 478d483..1c5e1e2 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 478d4832d135479695f8a13c220d682da85c818f
+Subproject commit 1c5e1e2e8e0cfa19b9587ef00e89761d08ec2b82