Support kubernetes.io/role label for node roles (#155)

Signed-off-by: fernandocarletti <contato@fernandocarletti.net>

dashboard/client/api/endpoints/nodes.api.ts

@@ -109,6 +109,11 @@ export class Node extends KubeObject {
     const roleLabels = Object.keys(this.metadata.labels).filter(key =>
       key.includes("node-role.kubernetes.io")
     ).map(key => key.match(/([^/]+$)/)[0]) // all after last slash
+
+    if (this.metadata.labels["kubernetes.io/role"] != undefined) {
+      roleLabels.push(this.metadata.labels["kubernetes.io/role"])
+    }
+
     return roleLabels.join(", ")
   }