Update git submodules

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

    The kubespray installer contains one inventory per flavor. We can get
    rid of these files and use the dynamic inventory similar to OSA.
    Moreover, we extend the dynamic inventory to read additional group
    variables per flavor if necessary. This way we can still pass additional
    information to inventory on per-flavor basis. This also fixes a typo
    in the 'IDF' file. We also need to bump Ansible for kubespray since the
    version we were using is having troubles with dynamic inventories.

    Change-Id: Ic58101555f81aec5fee3c193608440aa89bbe445
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index ca7b338..8de89f3 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit ca7b338b93affc2d1f08b6f47e7654f91653b47f
+Subproject commit 8de89f399e18ea3b29f5f19b7319a11d45fedbe0