Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "dovetail: Change CI jobs to run test suite "proposed_tests" instead of "debug""
  - dovetail: Change CI jobs to run test suite "proposed_tests" instead of "debug"

    JIRA: DOVETAIL-397

    now, team decide to use proposed_tests suite instead of debug

    Change-Id: Iff8ec0b32a24e51bc2d2536605c9867b94f8921c
    Signed-off-by: MatthewLi <matthew.lijun@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 780fc52..181ab49 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 780fc5289a39334ba2a16b42accc9c6c69245954
+Subproject commit 181ab495cc73197aa4bafb25e629a3a257967821