Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: update sha commit hashes for Fraser

    Change-Id: Ic3cb135911eddc4490a50e57f5165688cec623a0
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 860837b..583c715 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 860837bddd7fd805d311445de41144b3cbe75eb1
+Subproject commit 583c715b4c5320bdd6e0b09b68af852d8660dc14