Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Remove falsy ;;

    It completes "Create vnf and restapi images-built job for arm" [1]
    which introduced a new bug.

    [1] https://gerrit.opnfv.org/gerrit/#/c/50465/

    Change-Id: I45dcc6db65382eeb3280c719cec72c425164ab2f
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 42f9908..7c32b1f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 42f9908705ce1699f2645015edc50c5c3d77ab4a
+Subproject commit 7c32b1ffb5c6cc7b02559d0fc31ce33fc4b0169a