Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: osa: Move SSL certification tasks to a new file"
  - xci: osa: Move SSL certification tasks to a new file

    The tasks for creating and managing the XCI SSL certificates
    can be shared between installers so move them to a common file.

    Change-Id: I9df82517e737681420429a992aa8d68e78528fd4
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 07bf24c..55bec03 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 07bf24c6dbd37b09f1f9cd8e1dd7f46bf6bd7fff
+Subproject commit 55bec03a23de4bd1c008808a44ff36c25b936713