Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "fix the judgement condition"
  - fix the judgement condition

    when in danube branch the $BRANCH is stable/danube
    so we need fix the judgement condition

    Change-Id: If3a0a40b60098cbd0baf2e64fad8763fae128cb1
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 62ce510..7a1a66c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 62ce510224a1713fe6dfd75d3f4b0e3b5146ba26
+Subproject commit 7a1a66c416c3e0331ceb39833c078f2279e2ce7f