Update git submodules

* Update docs/submodules/releng/builder from branch 'master'
  to 96929712f8afd9487fe1c6b8f3a01e43a2aae52b
  - Remove unused ODL_L3 from local.conf

    ODL_L3 was a flag for the previous odl-ovsdb-openstack
    feature that had a non-L3 option. That feature is no
    longer supported and the current feature, odl-netvirt-openstack
    has l3 always enabled.

    Change-Id: I1a7cf197e9fa3903f3f788f44b58762586cf013c
    Signed-off-by: Sam Hague <shague@redhat.com>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index 6d642a610579352c6d6c9178bb89bc3f1da89acf..96929712f8afd9487fe1c6b8f3a01e43a2aae52b 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit 6d642a610579352c6d6c9178bb89bc3f1da89acf
+Subproject commit 96929712f8afd9487fe1c6b8f3a01e43a2aae52b