Update CHANGELOG to reflect fabric8io#2306 fix

Signed-off-by: Lalith Suresh <lsuresh@vmware.com>

CHANGELOG.md

@@ -5,6 +5,7 @@
 * Fix #2373: Unable to create a Template on OCP3
 * Fix #2316: Cannot load resource from stream without apiVersion
 * Fix #2389: KubernetesServer does not use value from https in crud mode
+* Fix #2306: Make KubernetesServer CRUD mode work with informers
 
 #### Improvements
 * Fix #2331: Fixed documentation for namespaced informer for all custom types implementing `Namespaced` interface