Updated git submodules

Project: releng/builder master 8d2f7df3cdb581f4d69c6617177d40537ab9fb0b

Merge "Update Centos7 java-builder image"

Update Centos7 java-builder image

- Pull in the latest Java security updates and systems updates
- Pull in the Quagga/6Wind binaries
- Image set as public.
  "id": "cc383a1b-468c-4d89-bdc3-1f651605a599",
  "visibility": "public",
  "name": "CentOS 7 - java-builder - 20170807-2145"

Change-Id: Ic323ee10f1a7e40045a4187fb09added1c66686f
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index 6fb33e86194a445d947888223c44eea071f4cfa9..8d2f7df3cdb581f4d69c6617177d40537ab9fb0b 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit 6fb33e86194a445d947888223c44eea071f4cfa9
+Subproject commit 8d2f7df3cdb581f4d69c6617177d40537ab9fb0b