Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Dedicated flavors for rally tests"
  - Dedicated flavors for rally tests

    Create flavors and use them in rally scenarios instead of expecting
    certain flavors to pre-exist.

    Change-Id: I77c94ab80fcabd7b80ffb36f9856a48121858009
    Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e4ad79c..63c4f79 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e4ad79cabc3292a1cb0d8642f0c9eddbbc2befd1
+Subproject commit 63c4f79fda75a4f9f0bdc056e96bb8b5df563210