Extend PRR template with node resource exhaustion question

Author: wojtek-t

keps/NNNN-kep-template/README.md

@@ -720,6 +720,15 @@ This through this both in small and large cases, again with respect to the
 [supported limits]: https://git.k8s.io/community//sig-scalability/configs-and-limits/thresholds.md
 -->
 
+###### Can enabling / using this feature result in resource exhaustion of some node resources (PIDs, sockets, inodes, etc.)?
+
+<!--
+Focus not just on happy cases, but primarily on more pathological cases
+(e.g. probes taking a minute instead of milliseconds, failed pods consuming resources, etc.).
+
+Are there any tests that were run/should be run to understand performance charasteristics better?
+-->
+
 ### Troubleshooting
 
 <!--