chore: update cost management optimization labels

- Updates labels to match changes introduced in cost operator v1.4.0 and later.

Author: rrajashe

components/policies/development/cost-management/propagate-cost-management-labels/.chainsaw-test/resources/expected-pod-matching.yaml

@@ -5,4 +5,4 @@ metadata:
   namespace: ($namespace)
   labels:
     cost-center: ($cost_center)
-    insights_cost_management_optimizations: "true"
+    cost_management_optimizations: "true"

components/policies/development/cost-management/propagate-cost-management-labels/.chainsaw-test/resources/namespace-cost-center.yaml

@@ -5,4 +5,4 @@ metadata:
   labels:
     konflux-ci.dev/type: tenant
     cost-center: ($cost_center)
-    insights_cost_management_optimizations: "true"
+    cost_management_optimizations: "true"

components/policies/development/cost-management/propagate-cost-management-labels/propagate-cost-management-labels.yaml

@@ -10,7 +10,7 @@ metadata:
     policies.kyverno.io/subject: Pod
     policies.kyverno.io/description: >-
       Propagates the `cost-center` label from non-managed tenant namespaces to pods,
-      and sets the `insights_cost_management_optimizations` label to `true` on those pods.
+      and sets the `cost_management_optimizations` label to `true` on those pods.
 spec:
   webhookConfiguration:
     failurePolicy: Ignore
@@ -53,4 +53,4 @@ spec:
         metadata:
           labels:
             cost-center: "{{ costcenterLabel }}"
-            insights_cost_management_optimizations: "true"
+            cost_management_optimizations: "true"

components/policies/staging/base/cost-management/validate-cost-management-labels/.chainsaw-test/resources/namespace-cost-center.yaml

@@ -5,4 +5,4 @@ metadata:
   labels:
     konflux-ci.dev/type: tenant
     cost-center: ($cost_center)
-    insights_cost_management_optimizations: "true"
+    cost_management_optimizations: "true"

components/policies/staging/base/cost-management/validate-cost-management-labels/.chainsaw-test/resources/namespace-empty-cost-center.yaml

@@ -5,4 +5,4 @@ metadata:
   labels:
     konflux-ci.dev/type: tenant
     cost-center: ""
-    insights_cost_management_optimizations: "true"
+    cost_management_optimizations: "true"