Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Correct reporting of vEPC test case

    The configuration of the vEPC test case was missing information for
    generating a correct report and hence it incorrectlt reported FAILed
    despite passing.

    JIRA:DOVETAIL-666

    Change-Id: Id296fa0fd750e47dc841ef37acb2018b23de0643
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 12207c7..92daf3c 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 12207c749aeee06b805ac1b546e473c7519d96d6
+Subproject commit 92daf3c8721fa64a690fea358c9631b50ebc2205