Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Refactored docker watchdog code"
  - Refactored docker watchdog code

    Removed start_containers fix as it was redundant. Checking jenkins
    job status for each module separately as deployment of one module
    doesn't depend on other module.

    Change-Id: I8ce34b9b7458ac56c9b866b5add539ad304095ed
    Signed-off-by: Sakala Venkata Krishna Rohit <rohitsakala@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 83a07bf..dc7eea8 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 83a07bf0cafc7df1b9ea0ff0dfa8750f4cb8b065
+Subproject commit dc7eea848025842901163f4bd91eaaaf81e3ab0e