Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "bottlenecks: enable daily deploy job."
  - bottlenecks: enable daily deploy job.

    Change-Id: I84e8cf5dc9f9ae6884ff70363067b5534b6f196b
    Signed-off-by: liyin <liyin11@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e6cd3c6..c9728da 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e6cd3c6c77d2aaf6cb7d6765edb5baf9bc50bcf7
+Subproject commit c9728da80667f04433b52d3329c85dd178dd8c61