Merge pull request #9410 from theBeginner86/theBeginner86/chore/63

[policy] Add Sibling Policy

server/meshmodel/kubernetes/policies/sibling-policy.rego

@@ -0,0 +1,75 @@
+package meshmodel_policy
+#https://play.openpolicyagent.org/p/YcqqNCLuJx
+
+label_obj[label_key] {
+	some key
+	svc := input.services[_]
+	labels := svc.labels
+	labels[key]
+	label_key = key
+}
+
+annotation_obj[annotation_key] {
+	some key
+	svc := input.services[_]
+	annotation := svc.annotations
+	annotation[key]
+	annotation_key = key
+}
+
+
+group_objects_with_matching_field = result {
+	labels_result := {labels_map: key |
+        some labels_map
+        label_obj[labels_map]
+        svc := input.services[_]
+        svc.labels
+        some keys
+        svc.labels[keys]
+        keys == labels_map
+
+        key := {value: result |
+            svc := input.services[_]
+            labels := svc.labels
+            some value
+            some k
+            value = labels[k]
+            k == labels_map
+            result = {r |
+                some name
+                x := input.services[name]
+                x.labels == labels
+                id := x.traits.meshmap.id
+                r := {"id": id, "name": name}
+            }
+        }
+    } 
+
+	annotation_result := {annotations_map: key |
+        some annotations_map
+        annotation_obj[annotations_map]
+        svc := input.services[_]
+        svc.annotations
+        some keys
+        svc.annotations[keys]
+        keys == annotations_map
+
+        key := {value: result |
+            svc := input.services[_]
+            annotations := svc.annotations
+            some value
+            some k
+            value = annotations[k]
+            k == annotations_map
+            result = {r |
+                some name
+                x := input.services[name]
+                x.annotations == annotations
+                id := x.traits.meshmap.id
+                r := {"id": id, "name": name}
+            }
+        }
+    } 
+
+    result := {"annotations": annotation_result, "labels": labels_result}
+}