Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[dovetail] set correct Cinder process name on Apex"
  - [dovetail] set correct Cinder process name on Apex

    In fraser, cinder-api runs as an apache module called cinder_wsgi.

    JIRA: DOVETAIL-690

    Change-Id: I6660e1e17e61c0010295431290d5db20777af0d4
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 8b74f1f..dea2ba2 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 8b74f1f0bd48ff5300d902495293a8951664374f
+Subproject commit dea2ba2a17dadb60bcb9c6a21642721f6d71f812