Replace opencord.org with lfbroadband.org

This replaces all instances of opencord.org with lfbroadband.org, with
the exception of email addresses, which are not yet migrated.

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: Id34a12b75668e2cab6b6bc76f148f030324ac276
diff --git a/.gitmodules b/.gitmodules
index c0cb8ec..17cc7a6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9,4 +9,4 @@
 	url = https://github.com/lfit/releng-common-packer.git
 [submodule "lf/onf-make"]
 	path = lf/onf-make
-	url = http://gerrit.opencord.org/onf-make
+	url = http://gerrit.lfbroadband.org/onf-make