Add releasenote to tag the Tempest for 2024.2 release

Updating the doc for the same.

Change-Id: Id3f8d7fa8f344fc9b7df79637108f3522eb2e84f
diff --git a/releasenotes/notes/tempest-2024-2-release-78846595720db3cd.yaml b/releasenotes/notes/tempest-2024-2-release-78846595720db3cd.yaml
new file mode 100644
index 0000000..57367c8
--- /dev/null
+++ b/releasenotes/notes/tempest-2024-2-release-78846595720db3cd.yaml
@@ -0,0 +1,17 @@
+---
+prelude: >
+    This release is to tag Tempest for OpenStack 2024.2 release.
+    This release marks the start of 2024.2 release support in Tempest.
+    After this release, Tempest will support below OpenStack Releases:
+
+    * 2024.2
+    * 2024.1
+    * 2023.2
+    * 2023.1
+
+    Current development of Tempest is for OpenStack 2025.1 development
+    cycle. Every Tempest commit is also tested against master during
+    the 2025.1 cycle. However, this does not necessarily mean that using
+    Tempest as of this tag will work against a 2025.1 (or future release)
+    cloud.
+    To be on safe side, use this tag to test the OpenStack 2024.2 release.