Adds a --run option to the enable command

[tonysm]

Changed

• Reverts the passthrough options to be container arguments instead of docker run options (Fix ordering issue with passthrough parameters #302)

Added

• Adds a new --run option to the enable command which can be used to pass any extra docker run option

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This is how we can use this:

takeout enable mysql --run="--restart unless-stopped -e 'LOREM=IPSUM'" -- -h127.0.0.1 -usome-user

This will be translated to a docker command like this:

docker run --restart unless-stopped -e 'LOREM=IPSUM' {service-options} mysql -h127.0.0.1 -usome-user

where {service-options} depends on the options defined in the service class.

[driftingly]

This looks really good @tonysm!
We'll need to document this and how to pass through additional options -- when we tag the next release.