Support updating a container
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hongbin
Support updating attributes of a container. For example,
$ zun create --image busybox --command "echo hello" --name test
$ zun update test --command "echo hello2"
General use case: Stop a running container, update the configuration, and restart the container.
After a quick look, it is useful to update the following attributes: name, cpu, memory, ports, command, labels, environment
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Add container-update API
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