Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Update Global-jjb to master"
  - Update Global-jjb to master

    This brings in:
      Skip vote for releng-rtd from gerrit trigger
    and three changes after it that are either innocuous or important.

    xmldiff:
    https://hastebin.com/zutufehafa.diff

    Change-Id: Ic5c67ff5d6aebc6fc2149b212acc3bcf7cf9951b
    Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4b54616..e1f8f18 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4b546160a5f99e5a2b0d2f9df09f94ffbd067492
+Subproject commit e1f8f186188b3d641abafa8970f40e585be96caf