update dashboard image repo to remove arch flag (#9530)

Signed-off-by: lihai.tu <lihai.tu@daocloud.io>

Signed-off-by: lihai.tu <lihai.tu@daocloud.io>

roles/download/defaults/main.yml

@@ -1103,7 +1103,7 @@ gcp_pd_csi_attacher_image_tag: "v2.1.1-gke.0"
 gcp_pd_csi_resizer_image_tag: "v0.4.0-gke.0"
 gcp_pd_csi_registrar_image_tag: "v1.2.0-gke.0"
 
-dashboard_image_repo: "{{ docker_image_repo }}/kubernetesui/dashboard-{{ image_arch }}"
+dashboard_image_repo: "{{ docker_image_repo }}/kubernetesui/dashboard"
 dashboard_image_tag: "v2.7.0"
 dashboard_metrics_scraper_repo: "{{ docker_image_repo }}/kubernetesui/metrics-scraper"
 dashboard_metrics_scraper_tag: "v1.0.8"