feat(cmp): clusters list add new background img (erda-project#2121)

* feat(cmp): clusters list add new background img

* feat: code optimization

Author: hujiahao-hjh

shell/app/common/components/list/index.scss

@@ -6,7 +6,6 @@
     background-color: $white;
     box-shadow: 0 2px 4px 0 $color-box-shadow;
     background-position: 100% 0;
-    background-size: auto 70%;
     background-repeat: no-repeat;
 
     &.no-border {

shell/app/config-page/img-map.ts

@@ -22,6 +22,9 @@ import defaultK8sNodeIcon from 'app/images/default-k8s-node.svg';
 import defaultK8sPodIcon from 'app/images/default-k8s-pod.svg';
 import defaultK8sWorkload from 'app/images/default-k8s-workload.svg';
 import K8sClusterBg from 'app/images/k8s-cluster-bg.svg';
+import edasClusterBg from 'app/images/edas-cluster-bg.svg';
+import dcosClusterBg from 'app/images/dcos-cluster-bg.svg';
+import aliCloudClusterBg from 'app/images/ali-cloud-cluster-bg.svg';
 
 const ImgMap = {
   frontImg_default_project_icon: defaultProjectIcon,
@@ -35,6 +38,9 @@ const ImgMap = {
   default_k8s_pod: defaultK8sPodIcon,
   default_k8s_workload: defaultK8sWorkload,
   k8s_cluster_bg: K8sClusterBg,
+  edas_cluster_bg: edasClusterBg,
+  dcos_cluster_bg: dcosClusterBg,
+  ali_cloud_cluster_bg: aliCloudClusterBg,
 };
 
 export default ImgMap;