Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Include full date in name of compressed result file

    The name of the compressed result file included a timestamp according
    to the pattern "day_hour_minute". This is a rather uncommon timestamp
    and can cause confusion. This patch changes the timestamp to a more
    common "YearMonthDay-HourMinute" format.

    Please note: Please check if this change has an impact on the web
    portal.

    Change-Id: Ife41050bc1d5ca6942706b756d03a1d0d251ae41
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 1fcf44e..0a975f1 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 1fcf44ee63a1d0aa1fd07a867fefcc8edf257393
+Subproject commit 0a975f104f0af27f517bc8eaf9ae662915ae4e97