Add role label to nodes in chart (#11817)

* Add role label to nodes in chart

* Change back var

* Fix typo

* Implicitly make the first node the bootstrap node to avoid new values

charts/chainlink-cluster/templates/chainlink-node-deployment.yaml

@@ -1,4 +1,4 @@
-{{- range $cfg := .Values.chainlink.nodes }}
+{{- range $index, $cfg := .Values.chainlink.nodes }}
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -18,6 +18,10 @@ spec:
         app: {{ $.Release.Name }}
         instance: {{ $cfg.name }}
         release: {{ $.Release.Name }}
+        # Used for testing. Role value should either be: bootstrap or node.
+        # There should only be one "bootstrap" node, the rest should be "node".
+        # Here we set the first node to be bootstrap, the rest to be node.
+        role: {{ if eq $index 0 }}bootstrap{{ else }}node{{ end }}
         {{- range $key, $value := $.Values.labels }}
         {{ $key }}: {{ $value | quote }}
         {{- end }}