Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix former default values in build.sh

    Change-Id: I56abd4b22444615cbe27e13475d9f00a98e62cd7
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7db506b..64f7b17 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7db506b8c184917d0986b14722bbbf95b7fce3d3
+Subproject commit 64f7b173a8466e5482adc1f938be9a463b9b1257