Add new ecs fields to containerd integration

[MichaelKatsoulis]

Add new ECS container fields.
Fields are:

1. container.cpu.usage
2. container.memory.usage
3. container.disk.read.bytes
4. container.disk.write.bytes

[elasticmachine]

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• Start Time: 2022-04-11T14:30:55.117+0000

• Duration: 14 min 29 sec

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