Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [dovetail] add fraser docker build job

    Change-Id: Ic54f6fe21dc0e9d2b3a9a2f3db1ba82f08446b6c
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 93b4857..5ec41fb 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 93b485792c0e2e03bce0fade652a27eec69ad841
+Subproject commit 5ec41fb664b6ab8847031842f70542870eef3a57