Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add securityscanning in thirdparty-requirements.txt"
  - Add securityscanning in thirdparty-requirements.txt

    Now it can be installed via python package [1] and then be listed in
    thirdparty-requirements.txt.

    [1] https://gerrit.opnfv.org/gerrit/#/c/36437/

    Change-Id: Ib9489de1f46993fa9fe35485fa95baf003d44974
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index bcb7755..42469fc 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit bcb7755cc73cd17fe0d8736332da674498209e29
+Subproject commit 42469fc34e2e216a1a655dae364d06f0f634d0e7