Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - xci: Move Vagrantfile to root directory

    We need access to the entire releng-xci directory so we can use the
    OPNFV_RELENG_DEV_PATH variable to use modified files for testing
    purposes so we move the Vagrantfile to the root directory.

    Change-Id: I941b6f2efff479024ff580c3d58fcdcbadd9aa7f
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index fd28594..036d1e4 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit fd28594a47af292d43352372f591174a6585eaad
+Subproject commit 036d1e4afb3692ce418c71cc445c0e28469cae5d