Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Remove the share flag

    When creating the external network for functest testing purposes, it does not
    need to be shareable between tenants because functest uses routers and floating
    ips. Therefore, better remove it to avoid confusion

    Change-Id: I18a1fd34a52ddae2527ee3580a9d1a2b649e61b6
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 4689cac..a0d0940 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 4689cace9d3aa67d24d740201f1cb4ab29d930d8
+Subproject commit a0d0940dcb7f22b4e4df24ee29804a8224f7c51d