Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Committer resignation of zenghui

    Removing zengshui from the list of committers.

    Change-Id: I5821b324445f21fc43b45164024a508de00ef5b5
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 1cba908..8c10165 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 1cba90830bfd6b0194971005e0f4ab7def1c5d3c
+Subproject commit 8c10165a04b8d84c03900535b66db806a2f0c949