Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add Rally scenarios for telemetry"
  - Add Rally scenarios for telemetry

    Ceilometer scenarios were added.

    Reasons for testcase blacklisting:
    - Deprecated ceilometer client used by Rally. This depends on the
      confuguration of the system, currently it seems to affect all
      installers.
    - A bug in ceilometer client (already fixed and merged in OpenStack
      repository).

    JIRA: FUNCTEST-849

    Change-Id: I0bd7e1e9817538165b7b9705bcec213d7d275359
    Signed-off-by: Martin Kulhavy <martin.kulhavy@nokia.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 0516ee1..c67c668 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 0516ee14b46a7327325bc4e8354a9b610276a770
+Subproject commit c67c6687976a486af880ece2e6831d7ef7fbbdcc