Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: Fix deployment detecting snapshot type

    With the refactoring of the promotion job, the Apex deploy was not
    detecting the snapshot type and using default upstream deployment. This
    change passes the snapshot type to the deploy script for detection.

    Change-Id: I76cf2b894955aa94bd70dc597305553dc9fe4c17
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 351e562..afa13d6 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 351e5623582731756fedee5c506dc5fbdc836b93
+Subproject commit afa13d6ee8b87c8e63e71fa2ceead357396b8f70