Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Modify the daisy slavel-label in yardstick daily jobs"
  - Modify the daisy slavel-label in yardstick daily jobs

    Accoding to https://gerrit.opnfv.org/gerrit/#/c/52063/, the jobs of
    daisy master branch have been moved from zte-pod3 to daisy-baremetal.

    Change-Id: I6f2a93bd89f606c0506ef2bf60fe67f96ade0571
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4626ca5..5fe8617 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4626ca5ff32ba4690319f01e3cfe2dc8a300f031
+Subproject commit 5fe86177c5ca9b418fd0efb308e2ec3d4fc11a83