Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: enable RPM build on master verify

    Now that we only build apex python rpm in master, we can afford to build
    RPM everytime and ensure it builds correctly.

    Change-Id: Ica1efe1cc2c3db0dfe1c5677b5ab47df121c0966
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f5b81c2..7e7eb51 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f5b81c26a751dcfcbdd8918f8fc38351c94147a7
+Subproject commit 7e7eb5118589fb4092ff495208db562959b0bae3