Add missing telemetry config key

Author: smola

utils/telemetry/intake/static/config_norm_rules.json

@@ -323,6 +323,7 @@
     "agent_transport": "agent_transport",
     "agent_url": "trace_agent_url",
     "analytics_enabled": "analytics_enabled",
+    "api-security_sample_delay": "api_security_sample_delay",
     "apm.tracing.enabled": "apm_tracing_enabled",
     "apmTracingEnabled": "apm_tracing_enabled",
     "appsec.apiSecurity.enabled": "api_security_enabled",