Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Add ansible files for sandbox noha flavor"
  - xci: Add ansible files for sandbox noha flavor

    This patch adds noha target host configuration playbook, inventory, variable
    files and so on to use until we have time to fix things more properly and some
    other functionality becomes available in upstream. This approach will result in
    duplicates but it is something we can perhaps live with.

    NFS configuration is converted into a role and the rest is adjusted accordingly.

    The playbook to configure target hosts will be same with the one we will
    have for ha flavor but for different for the flavor mini.

    The user variables and openstack user configuration will be different between
    flavors and keeping deployment specific configuration.

    Change-Id: I8faceae846285fc3e4260cbced5b740a9b0c3766
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 56cc657..3f4c567 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 56cc657f8cd3ed250500d90ea33da1560d90033f
+Subproject commit 3f4c567e9653da19df355f0dfd2e32328baca41f