fix(tests): Round 37 - Fix RelabelConfigs slice types

Changed RelabelConfigs and MetricRelabelConfigs from pointer slices to value slices:
- []*monitoringv1.RelabelConfig -> []monitoringv1.RelabelConfig
- Also fixed Replacement field to use stringPtr helper
- Prometheus Operator API expects value slices, not pointer slices

Errors fixed in Round 37: 1 (slice type mismatch)
Total errors fixed across ALL 37 rounds: 157

Author: thc1006

adapters/vnf-operator/tests/monitoring/servicemonitor_test.go

@@ -258,7 +258,7 @@ func TestServiceMonitorCreation(t *testing.T) {
 							Scheme:   "http",
 							Interval: "30s",
 							ScrapeTimeout: "10s",
-							RelabelConfigs: []*monitoringv1.RelabelConfig{
+							RelabelConfigs: []monitoringv1.RelabelConfig{
 								{
 									SourceLabels: []monitoringv1.LabelName{"__name__"},
 									Regex:        "go_.*",
@@ -273,7 +273,7 @@ func TestServiceMonitorCreation(t *testing.T) {
 									TargetLabel:  "dms_role",
 								},
 							},
-							MetricRelabelConfigs: []*monitoringv1.RelabelConfig{
+							MetricRelabelConfigs: []monitoringv1.RelabelConfig{
 								{
 									SourceLabels: []monitoringv1.LabelName{"__name__"},
 									Regex:        "o_ran_(.*)",