Update release notes, adding howto pages for documenting individual release activities

Change-Id: I2fb29c4ed4467126bfcdaa097b1dd8329ce7adfe
diff --git a/howto/release/repositories/index.rst b/howto/release/repositories/index.rst
new file mode 100644
index 0000000..60f9081
--- /dev/null
+++ b/howto/release/repositories/index.rst
@@ -0,0 +1,12 @@
+Release
+=======
+
+.. toctree::
+   :maxdepth: 1
+
+   voltha-protos/index
+
+   ci-management/index
+   ofagent-go/index
+   voltha-lib-go/index
+   voltha-onos/index