Update git submodules

* Update docs/submodules/releng from branch 'master'
  - APEX: Fix gate check scenario detection

    - Change scenario parsing to allow k8s scenarios in gate jobs.
    - Remove scenario detection in shell scripts.

    Also changes network setting file for fd.io scenarios as we
    don't use separate config files any more.

    Change-Id: Icbcc6cb7b6b66c7cc43f5d6c58dd97730e41ea5f
    Signed-off-by: Feng Pan <fpan@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9380666..801948c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9380666a19dc94aa270730b40517e51a9f318958
+Subproject commit 801948cb91c29aceb05a4faa4845048fee7c90af