Merge pull request #96069 from amolnar-rh/OCPBUGS-58054

OCPBUGS-58054#Add RN for extended loopback cert validity for kube-api server

Author: bscott-rh

release_notes/ocp-4-16-release-notes.adoc

@@ -1449,6 +1449,12 @@ With this release, the {ibm-power-name} Virtual Server has been updated to use {
 
 With this release, additional debugging statements were added to the `ServiceInstanceNameToGUID` function.
 
+[discrete]
+[id="ocp-4-16-notable-technical-changes-loopback-cert_{context}"]
+=== Extended loopback certificate validity to three years for kube-apiserver
+
+Previously, the self-signed loopback certificate for the Kubernetes API Server expired after one year. With this release, the expiration date of the certificate is extended to three years.
+
 [id="ocp-4-16-deprecated-removed-features_{context}"]
 == Deprecated and removed features