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/makefiles/virtualenv.mk b/makefiles/virtualenv.mk
index a400edf..9ccec0e 100644
--- a/makefiles/virtualenv.mk
+++ b/makefiles/virtualenv.mk
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # -----------------------------------------------------------------------
-# https://gerrit.opencord.org/plugins/gitiles/onf-make
+# https://gerrit.lfbroadband.org/plugins/gitiles/onf-make
 # ONF.makefile.version = 1.2
 # -----------------------------------------------------------------------