Allow non-Latin characters in Experiment name (Azure#18703)

https://github.com/Azure/azure-resource-manager-rpc/blob/master/v1.0/resource-api-reference.md#arguments-for-crud-on-resource

Author: jaysvoboda

specification/chaos/resource-manager/Microsoft.Chaos/preview/2021-09-15-preview/types/experiments.json

@@ -13,7 +13,7 @@
       "in": "path",
       "required": true,
       "minLength": 1,
-      "pattern": "^[a-zA-Z0-9_\\-\\.]+$",
+      "pattern": "^[^<>%&:?#/\\\\]+$",
       "x-ms-parameter-location": "method"
     },
     "statusId": {