Add release notes page for version 32.0.0

Tempest 32.0.0 has been released [1].
This commit adds a new page for 32.0.0 release notes.

[1] https://review.opendev.org/c/openstack/releases/+/857606

Change-Id: I7b13670b307231d064dbfd727c86457b72b78734
diff --git a/releasenotes/source/index.rst b/releasenotes/source/index.rst
index 9b5aad3..b36be01 100644
--- a/releasenotes/source/index.rst
+++ b/releasenotes/source/index.rst
@@ -6,6 +6,7 @@
    :maxdepth: 1
 
    unreleased
+   v32.0.0
    v31.1.0
    v31.0.0
    v30.0.0
diff --git a/releasenotes/source/v32.0.0.rst b/releasenotes/source/v32.0.0.rst
new file mode 100644
index 0000000..e4c2cea
--- /dev/null
+++ b/releasenotes/source/v32.0.0.rst
@@ -0,0 +1,5 @@
+=====================
+v32.0.0 Release Notes
+=====================
+.. release-notes:: 32.0.0 Release Notes
+   :version: 32.0.0