Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Create script to run yardstick

    The created script runs the yardstick in similar way the functest
    script does.

    installer-type:osa
    deploy-scenario:os-nosdn-nofeature

    Change-Id: Ic03445ec03fcfec8dc0d09f638e7cb1187fef883
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 680f203..f48050c 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 680f203f5b37b10fbaaf69c04b983cf333c12dc6
+Subproject commit f48050cbf6b761eba3b9f1d56e420ba3eebd6d64