Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Adding OpenStack controller database HA test case

    Adding the OpenStack controller database HA test case (Yardstick tc090)
    to Dovetail and the proposed_tests test suite.

    JIRA: DOVETAIL-654

    Change-Id: I4d20b907de8df2e9567891354b49e832cce13c7c
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 8c10165..cbf819b 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 8c10165a04b8d84c03900535b66db806a2f0c949
+Subproject commit cbf819bd0d4e1ccfe854bbf168169b09dd85252c