Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "Remove opnfv vm from known_hosts"
  - Remove opnfv vm from known_hosts

    Change-Id: I21998a31a26a201d767734d574ade8db7fd50c92
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 05a9768..92f89a5 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 05a97682f57a62169eb0760c1d4a2e8599f7873d
+Subproject commit 92f89a5d2028675cf03d8b828da1fd7233f77115