feat: Plugin server supports k8s deployment and configures the default download URL of the plugin(#2232, #2280,#2312) (#2389)

Co-authored-by: xujingfeng <jingfeng.xjf@alibaba-inc.com>
Co-authored-by: 澄潭 <zty98751@alibaba-inc.com>

helm/core/templates/plugin-server-service.yaml

@@ -0,0 +1,16 @@
+{{- if .Values.global.enablePluginServer }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "pluginServer.name" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "pluginServer.labels" . | nindent 4 }}
+spec:
+  ports:
+    - protocol: TCP
+      port: {{ .Values.pluginServer.service.port }}
+      targetPort: 8080
+  selector:
+    {{- include "pluginServer.selectorLabels" . | nindent 4 }}
+{{- end }}