Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add minimal docstings in clearwater_ims_base.py

    It will allow forcing 10/10 in any new patchset.

    Change-Id: I4cc52a9fb66fdd2c0dcbf9915be262acedac8672
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e82b4cd..f1353ff 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e82b4cd430c930072d6fafb83df976d8dd53da46
+Subproject commit f1353fff60344b01c588d9724b3b1de819cbe661