cli/command: DockerCli: store API-client options as field by thaJeztah · Pull Request #6739 · docker/cli

@thaJeztah

Use a more generic "clientOptions" field to store options to apply
when constructing the API client, instead of a dedicated field for
user-agent.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>