Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Switch to Shade in rally

    Use Shade for managing OpenStack resources in rally.

    Change-Id: Ic8b7aaef6886f6ca4930b2ea463317b75ed8d3c9
    Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>
  - Implement get_external_network via shade

    It fixes the current issues as EXTERNAL_NETWORK is mainly unset by
    all Installers [1].

    [1] https://build.opnfv.org/ci/view/functest/job/functest-fuel-armband-baremetal-arm-daily-fraser/31/console

    Change-Id: I8ee62623701c15b9ff962d0a0e07a77934ff03ac
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9fb7021..e32353a 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9fb702111ae63824a2e293d327437d0486a565d2
+Subproject commit e32353a740a3aaa76031fe9c2372b11f88add1bb