Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[dovetail-webportal] Edit verify job"
  - [dovetail-webportal] Edit verify job

    Set the verify job of the webportal to be 'echo hello world' temporarily.

    Change-Id: Ib9c749572a629595593405fba6ae275d2dc90563
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 158daab..77907fe 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 158daaba615509c200139b1bc43d28b35120ef2c
+Subproject commit 77907fed6c5ee2d7e8de3b325ba5dabf3f897887