Add releasenote to tag the end of support for Pike

This relesenote also mark end of support for Pike release
in Patrole as Pike is in EM state[1].

[1] https://releases.openstack.org/

Change-Id: I71c211f91c320299c873652f46acd5cb93afb825
diff --git a/releasenotes/notes/intermediate-train-release-c8f2da843a6e3809.yaml b/releasenotes/notes/intermediate-train-release-c8f2da843a6e3809.yaml
new file mode 100644
index 0000000..fbdbeaf
--- /dev/null
+++ b/releasenotes/notes/intermediate-train-release-c8f2da843a6e3809.yaml
@@ -0,0 +1,12 @@
+---
+prelude: >
+    This is an intermediate release during the Train development cycle to
+    marks the end of support for Pike in Patrole.
+    After this release, Patrole will support below OpenStack Releases:
+
+      * Stein
+      * Rocky
+      * Queens
+
+    Current development of Patrole is for OpenStack Train development
+    cycle.