fix append function usage

Author: cognifloyd

templates/secrets_st2web-ssl-certs.yaml

@@ -31,12 +31,12 @@ data:
 {{- else }}
   {{- $hosts := list .Values.st2web.service.hostname (printf "%s-st2web.%s.svc" .Release.Name .Release.Namespace) | compact }}
   {{- $altNamesDict := dict "altNames" (list) }}
-  {{- range $domain := (append "" (.Values.dnsConfig.searches | default (list)) }}
+  {{- range $domain := "" | append (.Values.dnsConfig.searches | default (list)) }}
     {{- range $host := $hosts }}
       {{- $_ := printf "%s.%s" $host $domain | trimSuffix "." | append $altNamesDict.altNames | set $altNamesDict "altNames" }}
     {{- end }}
   {{- end }}
-  {{- $altNames := append (printf "%s-st2web.%s" .Release.Name .Release.Namespace) $altNamesDict.altNames }}
+  {{- $altNames := printf "%s-st2web.%s" .Release.Name .Release.Namespace | append $altNamesDict.altNames }}
   {{- $ca := genCA (print .Release.Name "-st2web-ca") 365 }}
   {{- $generated := genSignedCert (print .Release.Name "-st2web") nil $altNames 365 $ca }}
   ssl_certificate: |