Create releasenotes page for tempest 35.0.0, 36.0.0

Change-Id: I94bcfe2ee10c222a5c3845743ad889fb4a80442d
diff --git a/releasenotes/source/index.rst b/releasenotes/source/index.rst
index 4c1edd5..989d3b5 100644
--- a/releasenotes/source/index.rst
+++ b/releasenotes/source/index.rst
@@ -6,6 +6,8 @@
    :maxdepth: 1
 
    unreleased
+   v36.0.0
+   v35.0.0
    v34.2.0
    v34.0.0
    v33.0.0