Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix image name in rally scenarios"
  - Fix image name in rally scenarios

    Change-Id: I0a78a16d44c1e0e0b2edec2e43954c1f08e8bb09
    Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7b83f22..9957861 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7b83f22fdb5f52cb4822c6ef09c07e8890a66ad8
+Subproject commit 995786148843e5a52c2ebbc4defd78dea523fe59