Update git submodules

* Update docs/submodules/releng from branch 'master'
  - yardstick: Rename yardstick-ci-jobs to align with functest

    Change-Id: I1b88ca7f25431b48e3fce3ebec20274062204718
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 7a1a66c..c786cbc 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 7a1a66c416c3e0331ceb39833c078f2279e2ce7f
+Subproject commit c786cbc734a5248891355afb88b76af849aa9798