Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add Docker build opts

    Change-Id: I91fcb833b6b6216338b4fcb888f093a2086264a7
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index b94eea5..9545e4c 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit b94eea5dc2d97a5055d2a98b7b330cc52cac5649
+Subproject commit 9545e4cd5f16805adf2caadf348432ca1e8d9cd7