Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "dovetail: fix compass branch issue"
  - dovetail: fix compass branch issue

    log https://build.opnfv.org/ci/job/compass-os-nosdn-nofeature-ha-virtual-daily-danube/119/

    Change-Id: I7ea57268b92e48c3531f412551c9582f440950ee
    Signed-off-by: MatthewLi <matthew.lijun@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1d595e4..ff48aae 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1d595e455c0afc2e006bbf3bbf05c550790f8d31
+Subproject commit ff48aae89a83e643c4fee972acba060c81759a60