Limit gateway kernels to non-Spark kernels

cesnet-mcc/playbooks/gateway.yaml

@@ -33,6 +33,13 @@
               - hosts:
                 - "{{ gateway_hostname }}"
                 secretName: acme-tls-gateway
+          kernel:
+            allowedKernels:
+              - r_kubernetes
+              - python_kubernetes
+              - python_tf_kubernetes
+              - python_tf_gpu_kubernetes
+              - scala_kubernetes
           kip:
             enabled: true
             # serviceAccountName: 'kernel-image-puller-sa'