Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add functest in upper-constraints"
  - Add functest in upper-constraints

    It's required by OPNFV Features such as sfc.
    Functest is removed from constraints in Dockerfile else it would
    conflict with the local dir.

    Change-Id: I2df5cd151b43eb1a4f0320510183d0f28cdf84c3
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a695d43..b529f96 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a695d43010cb7096c0e1291a4f0d50b6abea7400
+Subproject commit b529f96a28d8aeba253cd2cf4b301915fac28c39