Merge pull request #36192 from bmcelvee/OSDOCS-2623-rn

OSDOCS-2623: release note for HAProxy 2.2.15 version bump

Author: bmcelvee

Diff for: release_notes/ocp-4-9-release-notes.adoc

@@ -529,6 +529,12 @@ The {rh-openstack-first} cloud provider LoadBalancer configuration now defaults
 
 // Note: use [discrete] for these sub-headings.
 
+[discrete]
+[id="ocp-4-9-haproxy-2.2.15-upgrade"]
+=== Ingress Controller upgraded to HAProxy 2.2.15
+
+The {product-title} Ingress Controller is upgraded to HAProxy version 2.2.15.
+
 [id="ocp-4-9-deprecated-removed-features"]
 == Deprecated and removed features