refa: align clusterName template to use dig-based nil-safe pattern (#116)

Author: joshiste

charts/steadybit-extension-gatling/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: steadybit-extension-gatling
 description: Steadybit gatling extension Helm chart for Kubernetes.
-version: 1.1.42
+version: 1.1.43
 appVersion: v1.0.39
 home: https://www.steadybit.com/
 icon: https://steadybit-website-assets.s3.amazonaws.com/logo-symbol-transparent.png

charts/steadybit-extension-gatling/templates/deployment.yaml

@@ -59,9 +59,9 @@ spec:
             - name: STEADYBIT_EXTENSION_ENABLE_LOCATION_SELECTION
               value: "true"
             {{- end }}
-            {{ if or (and .Values.global .Values.global.clusterName) .Values.kubernetes.clusterName }}
+            {{- with (.Values.kubernetes.clusterName | default (dig "clusterName" nil (.Values.global | default dict))) }}
             - name: STEADYBIT_EXTENSION_KUBERNETES_CLUSTER_NAME
-              value: {{ if and .Values.global .Values.global.clusterName }}{{ .Values.global.clusterName | quote }}{{ else }}{{ .Values.kubernetes.clusterName }}{{ end }}
+              value: {{ . | quote }}
             {{- end }}
             - name: STEADYBIT_EXTENSION_KUBERNETES_NODE_NAME
               valueFrom: