Added missing service for the publish API

{{- $search := .Values.index.search -}}

{{- if (and .Values.index.enabled $search.separatePublishApi) -}}

apiVersion: v1

kind: Service

metadata:

  name: {{ include "esgf.component.fullname" (list . "publish") }}

  labels: {{ include "esgf.component.labels" (list . "publish" $search.labels) | nindent 4 }}

spec:

  type: ClusterIP

  ports:

    - name: http

      port: 8080

      targetPort: http

      protocol: TCP

  selector: {{ include "esgf.component.selectorLabels" (list . "publish") | nindent 4 }}

{{- end -}}