Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Fix fixed_network_name in tempest.conf

    It also copies rally.conf and tempest.log in res_dir.

    Change-Id: Ib907a29ba3f47ca861d3af8afc0ee74446222e89
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 0fd76322f95b755d347826f707c092105506311b)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index ecea6d7..47207b7 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit ecea6d7c62213e3b84c6af9ea1f1c606eddadfc8
+Subproject commit 47207b77f9c0649c3ec1292505258431657c507a