Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix image properties parsing"
  - Fix image properties parsing

    It removes useless spaces and now conforms with oslo.conf dict.
    New helpers and unit tests are available.

    Change-Id: I20335c5e5c3840cc872e158c6072d97a3f2cb98c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 1a22e73..0a0b2b3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 1a22e73c850c450305764c784c86dbc067e65dae
+Subproject commit 0a0b2b3e644e4ce353b37fa340954b78a590e20f