Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Email a monthly repo archives link to OPNFV Legal"
  - Email a monthly repo archives link to OPNFV Legal

    Each month we are asked for a copy of all the repositories for license
    scanning. Sending out a link to this archive will save them from having
    to ask.

    Change-Id: I2f51688049b08a556f6bc8d8b098165c0ba281d8
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index dc4cda2..d192a19 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit dc4cda2e9ee9d29396c88cf85ead84d58eaadf20
+Subproject commit d192a19493b045ea0cf5f89eaf50a8a8d2434785