[Go] redis add directive (Azure#21094)

Author: Alancere

specification/redis/resource-manager/readme.go.md

@@ -19,6 +19,22 @@ directive:
 - rename-model:
    from: 'RedisResource'
    to: 'ResourceInfo'
+- from: swagger-document
+  where: $.definitions.RedisCreateProperties
+  transform: >
+    $["x-ms-external"] = false
+- from: swagger-document
+  where: $.definitions.RedisUpdateProperties
+  transform: >
+    $["x-ms-external"] = false
+- from: swagger-document
+  where: $.definitions.RedisProperties
+  transform: >
+    $["x-ms-external"] = false
+- from: swagger-document
+  where: $.definitions.OperationStatus
+  transform: >
+    $["x-ms-external"] = false
 modelerfour:
   lenient-model-deduplication: true
 ```