Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Enable daisy HA deployment job"
  - Enable daisy HA deployment job

    In patch https://gerrit.opnfv.org/gerrit/#/c/36873/ daisy noha jobs
    were added since the HA function is not perfect at that time.
    Now the issues have been fixed and HA function can be enabled.

    Change-Id: I1fc9a235191ba47e8473ae8a429994dc36cca955
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e79e592..77dda57 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e79e592fb9559f2a513bb86112acad3746148aac
+Subproject commit 77dda579f55b63f8ed8f76690ea83d02c96e7a7b