Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "update blocked jobs"
  - update blocked jobs

    issues:
    * verify jobs delete previous job's container
    * merge-build job is abnormally blocked by parent job

    requirement:
    verify jobs should block merge jobs

    Change-Id: I63b64a9b46bf16d01cb34c863db887cdb9607421
    Signed-off-by: Julien <zhang.jun3g@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 52cd700..b02bc03 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 52cd700a0f32493f9b6317c265151c72c3c1de9c
+Subproject commit b02bc03691fda71399390a69ca1b056ce6bd7eac