[storagediscovery] Update client.tsp (Azure#35930)

* Update client.tsp

* Update client.tsp

Author: ChenxiJiang333

specification/storagediscovery/Microsoft.StorageDiscovery.Management/client.tsp

@@ -14,3 +14,8 @@ using Microsoft.StorageDiscovery;
 @@scope(Report.generateReport, "!(python,javascript,go,java,csharp)");
 @@scope(Report.listByResourceGroup, "!(python,javascript,go,java,csharp)");
 @@scope(Report.listBySubscription, "!(python,javascript,go,java,csharp)");
+
+@@clientName(Microsoft.StorageDiscovery,
+  "StorageDiscoveryMgmtClient",
+  "python"
+);