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**Features and Improvements**
- add ``acore_server_metadata.api.Server.run_ec2`` and ``acore_server_metadata.api.Server.run_rds`` method to launch a new EC2 instance or RDS db instance.
- add ``acore_server_metadata.api.Server.associate_eip_address`` to associate eip address to EC2 instance.
- add ``acore_server_metadata.api.Server.create_db_snapshot`` to create a manual db snapshot for RDS DB instance.
- add ``acore_server_metadata.api.Server.cleanup_db_snapshot`` to clean up old db snapshots for RDS DB instance.