Regional, i.e. multi-zone, volumes for 2 of 5 zk pods is now a variant

For background see #191

Also relevant to #269 #268 #243 #179

variants/gke-regional/kustomization.yaml

@@ -0,0 +1,8 @@
+bases:
+- ../scale-3-5
+resources:
+- gke-storageclass-broker-pd.yaml
+- gke-storageclass-zookeeper-ssd.yaml
+- gke-storageclass-zookeeper-regional-euwest1cd-ssh.yaml
+patchesStrategicMerge:
+- volume-claims.yaml

variants/gke-regional/volume-claims.yaml

@@ -0,0 +1,48 @@
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: kafka
+  namespace: kafka
+spec:
+  volumeClaimTemplates:
+  - metadata:
+      name: data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      storageClassName: kafka-broker
+      resources:
+        requests:
+          storage: 10Gi
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: pzoo
+  namespace: kafka
+spec:
+  volumeClaimTemplates:
+  - metadata:
+      name: data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      storageClassName: kafka-zookeeper
+      resources:
+        requests:
+          storage: 1Gi
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: zoo
+  namespace: kafka
+spec:
+  volumeClaimTemplates:
+  - metadata:
+      name: data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      storageClassName: kafka-zookeeper-regional
+      resources:
+        requests:
+          storage: 1Gi