additional IT

Signed-off-by: Attila Mészáros <csviri@gmail.com>

docs/reference.md

@@ -53,6 +53,7 @@ See sample usage within `Glue` [here](https://github.com/csviri/kubernetes-glue-
 The following attributes can be defined for a related resource:
 
 - **`name`** - same as for child resource, unique identifier, used to reference the resource.
+- **`clusterScoped`** - if the related resource is cluster scoped. Default is `false`.
 - **`apiVersion`** - Kubernetes resource API Version of the resource
 - **`kind`** - Kubernetes kind property of the resource
 - **`resourceNames`** - list of string of the resource names within the same namespace as `Glue`.  

src/test/java/io/csviri/operator/glue/GlueTest.java

@@ -308,7 +308,19 @@ void relatedResourceFromDifferentNamespace() {
 
   @Test
   void clusterScopedRelatedResource() {
+    var glue = create(TestUtils.loadGlue("/glue/ClusterScopedRelatedResource.yaml"));
 
+    await().untilAsserted(() -> {
+      var cm = get(ConfigMap.class, "configmap1");
+      assertThat(cm).isNotNull();
+      assertThat(cm.getData()).containsEntry("phase", "Active");
+    });
+
+    delete(glue);
+    await().timeout(TestUtils.GC_WAIT_TIMEOUT).untilAsserted(() -> {
+      var cm = get(ConfigMap.class, "configmap1");
+      assertThat(cm).isNull();
+    });
   }
 
   private List<Glue> testWorkflowList(int num) {

src/test/resources/glue/ClusterScopedRelatedResource.yaml

@@ -0,0 +1,22 @@
+apiVersion: io.csviri.operator.glue/v1beta1
+kind: Glue
+metadata:
+  name: "testglue"
+spec:
+  childResources:
+    - name: configMap
+      resource:
+        apiVersion: v1
+        kind: ConfigMap
+        metadata:
+          name: "configmap1"
+        data:
+          phase: "{related.status.phase}"
+  relatedResources:
+    - name: related
+      apiVersion: v1
+      kind: Namespace
+      clusterScoped: true
+      resourceNames: ["default"]
+
+