Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Draft one of the test specification.

    JIRA: DOVETAIL-352

    Needs a lot more work, but the directory tree and layout are according to our
    needs in order to have this published as a CVP document.  Will push patches
    to restructure the repo according to the new requirements later.

    Change-Id: I9d4316407c94bc3096d322f6206eccf236d349da
    Signed-off-by: ChristopherPrice <christopher.price@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 3ce7ad6..e0f4b3a 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 3ce7ad6a2f98268cd89a32f9fe083529b947bce5
+Subproject commit e0f4b3a6f279e8e3f4bc05307d60d6983cc60735