Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Release notes for Danube 1.0"
  - Release notes for Danube 1.0

    JIRA: FUNCTEST-562

    Change-Id: I1e2c827bad7c924561bbe433dac97c096282024d
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 2da5f7d..fa399d4 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 2da5f7d8b8a8813f1fd558364b29e143c263a85c
+Subproject commit fa399d46b192dd4e986fbc68035a794e6d473edf