SNMP: extend CI baseline to _cisco-catalyst.yaml and cisco-sb.yaml

Adds the same one-line comment to _cisco-catalyst.yaml and cisco-sb.yaml
so the CI test selector picks the same e2e tests as PR #23498. Lets us
compare like-for-like on the e2e_core_profiles failures.

No behavior change; not for merge.

Author: ian28223

snmp/datadog_checks/snmp/data/default_profiles/_cisco-catalyst.yaml

@@ -1,5 +1,6 @@
 # Metrics mixin for Cisco Catalyst devices.
 # Stored in a separate file for reuse within the cisco-3850 compat shim.
+# CI baseline test: comment-only change to verify environmental flake (AGENT-15682).
 
 # Example sysDescr:
 #   "Cisco Systems WS-C6509.Cisco Catalyst Operating System Software, Version 5.5(8).Copyright (c) 1995-2001 by Cisco Systems."

snmp/datadog_checks/snmp/data/default_profiles/cisco-sb.yaml

@@ -1,3 +1,4 @@
+# CI baseline test: comment-only change to verify environmental flake (AGENT-15682).
 extends:
   - _base.yaml
   - _generic-if.yaml