Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fix anteater job failed because of quatation marks"
  - Fix anteater job failed because of quatation marks

    When quatation marks exist in 'gerrit review' comment, it will failed:
    just like:
    https://build.opnfv.org/ci/job/opnfv-security-audit-verify-master/877/console

    JIRA: RELENG-280

    Change-Id: I3536873cb4b31290bae56fd127a00f3b27ba0b9f
    Signed-off-by: Julien <zhang.jun3g@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1c677a3..86fa506 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1c677a3571748100eff241dd167635331177dfb1
+Subproject commit 86fa506d9e6b37df0b79ac72fa2e78e1579430a2