Fix ec2_lc failing to create multi-volume configurations (ansible#32163)

lib/ansible/modules/cloud/amazon/ec2_lc.py

@@ -254,7 +254,7 @@ def create_launch_config(connection, module):
     classic_link_vpc_id = module.params.get('classic_link_vpc_id')
     classic_link_vpc_security_groups = module.params.get('classic_link_vpc_security_groups')
 
-    block_device_mapping = {}
+    block_device_mapping = []
 
     convert_list = ['image_id', 'instance_type', 'instance_type', 'instance_id', 'placement_tenancy', 'key_name', 'kernel_id', 'ramdisk_id', 'spot_price']
 
@@ -273,7 +273,7 @@ def create_launch_config(connection, module):
                 module.fail_json(msg='Device name must be set for volume')
             # Minimum volume size is 1GB. We'll use volume size explicitly set to 0 to be a signal not to create this volume
             if 'volume_size' not in volume or int(volume['volume_size']) > 0:
-                block_device_mapping.update(create_block_device_meta(module, volume))
+                block_device_mapping.append(create_block_device_meta(module, volume))
 
     try:
         launch_configs = connection.describe_launch_configurations(LaunchConfigurationNames=[name]).get('LaunchConfigurations')
@@ -298,7 +298,7 @@ def create_launch_config(connection, module):
         launch_config['ClassicLinkVPCSecurityGroups'] = classic_link_vpc_security_groups
 
     if block_device_mapping:
-        launch_config['BlockDeviceMappings'] = [block_device_mapping]
+        launch_config['BlockDeviceMappings'] = block_device_mapping
 
     if instance_profile_name is not None:
         launch_config['IamInstanceProfile'] = instance_profile_name