Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Update CI Resources and Requirements"
  - Update CI Resources and Requirements

    Indicates what requirements each resource type should meet in order to
    be considered part of OPNFV CI along with listing of the resources
    available.

    Includes a list of labels applied to servers and their intended use.

    JIRA: RELENG-403
    Change-Id: I0ba2671e95e29141d051019938fba930a42e7f56
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 07e6ce2..a1be8f9 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 07e6ce2c9b6a3a979468297377afe8526436ec87
+Subproject commit a1be8f9e82281c439d689292259a4f2005a5f4a2