Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "jjb: xci: xci-run-functest: Switch to dynamic inventory"
  - jjb: xci: xci-run-functest: Switch to dynamic inventory

    We no longer have static inventory files per installer and flavor
    so we need to switch to the dynamic inventory option.

    Change-Id: I5b8bf800264b1b297b61d09d010552cd22636627
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a45c528..f077491 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a45c528ebfd14095b303270231eb86033258ea65
+Subproject commit f0774918777561fd00c996438436c2ef7f4d67ff