Reverse comments in cli_args to fix rm param.

[realloc]

Without this patch rm attribute doesn't work. Docker (0.7.6) does not accept just '-rm'.
I'm not sure if this breaks anything else.

[bflad]

For which command/action: build or run?

• build documentation has it listed as build -rm (-rm implying true): http://docs.docker.io/en/latest/commandline/cli/#build
• run documentation has it listed as run -rm=false (unspecified whether just -rm would imply true): http://docs.docker.io/en/latest/commandline/cli/#run

This may be a good idea to be explicit with the =true/=false though. I'm open to accept this. We may also want to consider getting away from using shell CLI and opt for a real library/direct interface to avoid these sorts of issues.

I'm curious if others can weigh in on this issue or try suggested patch. Lacking a full regression suite for this cookbook (mea culpa), its hard to know the impact of changing this logic.

[bflad]

I read into the docker code more and found their CLI flag handling. Specifically I see: https://github.com/dotcloud/docker/blob/master/pkg/mflag/flag.go#L47-L48

I'll accept this, fix the Rubocop warning, and release in 0.27.0.