cmd/k8s-operator: support default proxy class in k8s-operator (#12711)

Signed-off-by: ChandonPierre <cpierre@coreweave.com>

Closes #12421

cmd/k8s-operator/deploy/chart/templates/deployment.yaml

@@ -77,6 +77,10 @@ spec:
               value: "{{ .Values.apiServerProxyConfig.mode }}"
             - name: PROXY_FIREWALL_MODE
               value: {{ .Values.proxyConfig.firewallMode }}
+            {{- if .Values.proxyConfig.defaultProxyClass }}
+            - name: PROXY_DEFAULT_CLASS
+              value: {{ .Values.proxyConfig.defaultProxyClass }}
+            {{- end }}
             {{- with .Values.operatorConfig.extraEnv }}
             {{- toYaml . | nindent 12 }}
             {{- end }}

cmd/k8s-operator/deploy/chart/values.yaml

@@ -78,6 +78,9 @@ proxyConfig:
   # Note that if you pass multiple tags to this field via `--set` flag to helm upgrade/install commands you must escape the comma (for example, "tag:k8s-proxies\,tag:prod"). See https://github.com/helm/helm/issues/1556
   defaultTags: "tag:k8s"
   firewallMode: auto
+  # If defined, this proxy class will be used as the default proxy class for
+  # service and ingress resources that do not have a proxy class defined.
+  defaultProxyClass: ""
 
 # apiServerProxyConfig allows to configure whether the operator should expose
 # Kubernetes API server.