[SQL] az sql mi update: Add --subnet and --vnet-name parameters to support the cross subnet update SLO

src/azure-cli/azure/cli/command_modules/sql/_help.py

@@ -892,10 +892,13 @@
     text: az sql mi update -g myResourceGroup -n myServer -i \\
               --user-assigned-identity-id /subscriptions/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testumi \\
               --identity-type SystemAssigned,UserAssigned --pid /subscriptions/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testumi
-  - name: Update a managed instance with User Managed Identies and Identity Type is UserAssigned.
+  - name: Update a managed instance with User Managed Identies and Identity Type is UserAssigned
     text: az sql mi update -g myResourceGroup -n myServer -i \\
               --user-assigned-identity-id /subscriptions/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testumi \\
               --identity-type UserAssigned --pid /subscriptions/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testumi
+  - name: Move managed instance to another subnet
+    text: az sql mi update -g myResourceGroup -n myServer -i \\
+              --subnet /subscriptions/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myResourceGroup/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testumi \\
 """
 
 helps['sql midb'] = """

src/azure-cli/azure/cli/command_modules/sql/_params.py

@@ -1979,6 +1979,17 @@ def _configure_security_policy_storage_params(arg_ctx):
 
         c.ignore('name')  # Hide sku name
 
+        c.extra('vnet_name',
+                options_list=['--vnet-name'],
+                help='The virtual network name',
+                validator=validate_subnet)
+
+        c.argument('virtual_network_subnet_id',
+                   options_list=['--subnet'],
+                   required=False,
+                   help='Name or ID of the subnet that allows access to an Azure Sql Managed Instance. '
+                   'If subnet name is provided, --vnet-name must be provided.')
+
     with self.argument_context('sql mi show') as c:
         c.argument('expand_ad_admin',
                    options_list=['--expand-ad-admin'],

src/azure-cli/azure/cli/command_modules/sql/custom.py

@@ -4313,7 +4313,8 @@ def managed_instance_update(
         primary_user_assigned_identity_id=None,
         key_id=None,
         identity_type=None,
-        user_assigned_identity_id=None):
+        user_assigned_identity_id=None,
+        virtual_network_subnet_id=None):
     '''
     Updates a managed instance. Custom update function to apply parameters to instance.
     '''
@@ -4362,6 +4363,9 @@ def managed_instance_update(
 
     instance.key_id = (key_id or instance.key_id)
 
+    if virtual_network_subnet_id is not None:
+        instance.subnet_id = virtual_network_subnet_id
+
     return instance