fix token scopes for azure_storage and azure_iot_hub (#1541)

Author: demoray

sdk/iot_hub/src/authorization_policy.rs

@@ -6,7 +6,7 @@ use azure_core::{
 };
 use std::sync::Arc;
 
-const IOTHUB_TOKEN_SCOPE: &[&str] = &["https://iothubs.azure.net"];
+const IOTHUB_TOKEN_SCOPE: &[&str] = &["https://iothubs.azure.net/.default"];
 
 #[derive(Debug, Clone)]
 pub struct AuthorizationPolicy {

sdk/storage/src/authorization/authorization_policy.rs

@@ -8,7 +8,7 @@ use azure_core::{
 };
 use std::{borrow::Cow, ops::Deref, sync::Arc};
 
-const STORAGE_TOKEN_SCOPE: &str = "https://storage.azure.com/";
+const STORAGE_TOKEN_SCOPE: &str = "https://storage.azure.com/.default";
 
 #[derive(Debug, Clone)]
 pub struct AuthorizationPolicy {