Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add new cinder scenarios for rally sanity/full"
  - Add new cinder scenarios for rally sanity/full

    Included several CinderQos and CinderVolumeTypes scenarios introduced
    by the recent Rally version.

    Change-Id: Ibd2affa2e0d24ec79d3b4518456ca0f0457ace9f
    Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a9337bc..94fc7e3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a9337bc5618bb90cd9502f1ec9dc409e18eae0f7
+Subproject commit 94fc7e3d0f904d227e3980567e640e2a4debf917