Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Make synchronous Shade calls

    It makes difficult to find the issues (floating ip, boot, ssh
    connection, etc...) for a small benefit regarding the current
    testcase implementations.

    It increases the default floating ip timeout because it has been
    reached when running Functest multiple times in parallel. It may
    be the root cause when running singlevm vs XCI (in that case,
    neutron api and agents are hosted in a nested vm).

    Change-Id: Ia97e04902321644c207c59987283754318aee5e5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 61881e3..8faf2e3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 61881e3926165a10657d02ebe627636cf6a61ecc
+Subproject commit 8faf2e3365fc5acc0167a05a919eef564f11491a