Add releasenote to tag the Patrole for Ussuri release

This commit adds the releasenote to tag Patrole for ussuri
release.

Change-Id: I369fb27036d91f5b6effcc1561b7f5cded93966d
diff --git a/releasenotes/notes/patrole-ussuri-release-6a2ec4e5c357fb19.yaml b/releasenotes/notes/patrole-ussuri-release-6a2ec4e5c357fb19.yaml
new file mode 100644
index 0000000..d4a262e
--- /dev/null
+++ b/releasenotes/notes/patrole-ussuri-release-6a2ec4e5c357fb19.yaml
@@ -0,0 +1,16 @@
+---
+prelude: >
+    This release is to tag the Patrole for OpenStack Ussuri release.
+    This release marks the start of Ussuri release support in Patrole.
+    After this release, Patrole will support below OpenStack Releases:
+
+      * Ussuri
+      * Train
+      * Stein
+
+    Current development of Patrole is for OpenStack Victoria development
+    cycle. Every Patrole commit is also tested against master during
+    the Victoria cycle. However, this does not necessarily mean that using
+    Patrole as of this tag will work against a Victoria (or future release)
+    cloud.
+    To be on safe side, use this tag to test the OpenStack Ussuri release.