Add releasenote to tag the Patrole for Rocky release

This commit adds the releasenote to tag Patrole for Rocky
and needed for version 0.4.0 to release.

Change-Id: Ic6897aa3dd057eebc99e750d50ebb87a35391b2d
diff --git a/releasenotes/notes/patrole-rocky-release-e6f36691306bec7e.yaml b/releasenotes/notes/patrole-rocky-release-e6f36691306bec7e.yaml
new file mode 100644
index 0000000..22c4958
--- /dev/null
+++ b/releasenotes/notes/patrole-rocky-release-e6f36691306bec7e.yaml
@@ -0,0 +1,14 @@
+---
+prelude: >
+    This release is to tag the Patrole for OpenStack Rocky release.
+    After this release, Patrole will support below OpenStack Releases:
+
+      * Rocky
+      * Queens
+      * Pike
+
+    Current development of Patrole is for OpenStack Stein development
+    cycle. Every Patrole commit is also tested against master during
+    the Stein cycle. However, this does not necessarily mean that using
+    Patrole as of this tag will work against a Stein (or future release)
+    cloud.