Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Adding Neutron trunk port tests to proposed_tests suite

    Adding the Neutron trunk port tempest tests to Dovetail and the
    proposed_tests test suite.

    JIRA: DOVETAIL-648

    Change-Id: Ia77980a245fd1bca6e5f0e567467432e12bf974e
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 05efb85..962f8ed 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 05efb85b4c2703be7145420c06aae5acb6778e2b
+Subproject commit 962f8ed21b97d40bc501c4854a4e28310023642d