Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Support opera test in functest releng"
  - Support opera test in functest releng

    Because opera vnf test requires Open-O msb ip and the independency
    of this test case, set specific docker env vars for compass4nfv
    os-nosdn-openo-ha scenario.

    Change-Id: I486e3896dc86d29cf93818b317675c088c1c5198
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3d3a5d7..fc5f95a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3d3a5d73637d09180d986c9307b18ffd68da160e
+Subproject commit fc5f95a30145e201ea6bc484d14598a6783ec4da