fix: ui spec to accept file

Author: Mahanmmi

platform/constants/ui-spec.json

@@ -15,12 +15,13 @@
           {
             "name": "kubeconfig",
             "label": "Kube config",
-            "inputType": "text",
+            "inputType": "file",
             "required": true,
             "order": 1,
             "validation": {
-              "pattern": ".*",
-              "errorMessage": ""
+              "fileTypes": [".yaml", ".yml"],
+              "maxFileSizeMB": 5,
+              "errorMessage": "Please upload a valid kube config yaml file not exceeding 5MB."
             },
             "info": "Kubeconfig file content, make sure that the currentContext is set to the desired cluster.",
             "external_help_url": "https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/"