Update cnf-best-practices-cpu-isolation.adoc

Author: mwlinca

modules/cnf-best-practices-cpu-isolation.adoc

@@ -9,5 +9,7 @@ Device interrupts are load balanced between all isolated and reserved CPUs to av
 [IMPORTANT]
 ====
 To use isolated CPUs, specific annotations must be defined in the pod specification.
+
+See test case link:https://github.com/test-network-function/cnf-certification-test/blob/main/CATALOG.md#lifecycle-cpu-isolation[lifecycle-cpu-isolation]
 ====