[registry] Fix test that fails if you enable checking poisson mean.

b/338055727

Change-Id: I67e6960d05d150ec693d4774da74e0203c594cd8
Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt/+/1044860
Reviewed-by: Alex Pankhurst <pankhurst@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Fuchsia-Auto-Submit: Alexandre Zani <azani@google.com>
diff --git a/src/bin/config_parser/src/config_validator/report_definitions_test.go b/src/bin/config_parser/src/config_validator/report_definitions_test.go
index 307c6cb..966e5bc 100644
--- a/src/bin/config_parser/src/config_validator/report_definitions_test.go
+++ b/src/bin/config_parser/src/config_validator/report_definitions_test.go
@@ -972,6 +972,7 @@
 	}
 
 	r.PrivacyMechanism = config.ReportDefinition_SHUFFLED_DIFFERENTIAL_PRIVACY
+	r.LocalAggregationProcedure = config.ReportDefinition_SELECT_FIRST
 	if err := validatePrivacyMechanismAndConfig(m, r); err == nil {
 		t.Errorf("Didn't rejected report with privacy mechanism SHUFFLED_DIFFERENTIAL_PRIVACY and empty config: %v", err)
 	}