Use bigger instances for hdfs tests (4 -> 8 cores, 16 -> 32 gb)

Currently tests are failing because we don't have enough CPU resources

Author: sbernauer

catalog/testsuites.yaml

@@ -387,21 +387,25 @@ operator_tests:
           spec:
             nodes:
               numberOfCores: 4
-              memoryMb: 16384
+              memoryMb: 32768
       - name: azure-aks
         test_params: --parallel 2
         cluster_definition_overlay: |
           spec:
             nodes:
-              vmSize: Standard_D4s_v3
+              vmSize: Standard_D8s_v3
       - name: gke
         test_params: --parallel 2
+        cluster_definition_overlay: |
+          spec:
+            nodes:
+              machineType: e2-standard-8
       - name: aws-eks
         test_params: --parallel 2
         cluster_definition_overlay: |
           spec:
             nodes:
-              instanceType: t2.large
+              instanceType: t2.2xlarge
       - name: hcloud-k3s-centos-8
         test_params: --parallel 2
       - name: hcloud-k3s-centos-9