Add release notes for upcoming release

The upcoming tempest release will include the stable library interface
this commit adds a release note for that and all the required supported
openstack releases boilerplate.

Change-Id: I87105c647f6cc621bbdd77ff1c44457dd1573276
diff --git a/releasenotes/notes/Tempest-library-interface-0eb680b810139a50.yaml b/releasenotes/notes/Tempest-library-interface-0eb680b810139a50.yaml
new file mode 100644
index 0000000..0ed3130
--- /dev/null
+++ b/releasenotes/notes/Tempest-library-interface-0eb680b810139a50.yaml
@@ -0,0 +1,11 @@
+---
+prelude: |
+    This release includes the addition of the stable library interface for
+    tempest. This behaves just as tempest-lib did prior to this, but instead
+    it lives directly in the tempest project. For more information refer to
+    the `library docs`_.
+
+    .. _library docs: http://docs.openstack.org/developer/tempest/library.html#library
+
+features:
+  - Tempest library interface