Feature request

Feature description

@codebot pointed out to me that ROS 1 uses __name and not __node for remapping the node name over the command-line, see:

https://wiki.ros.org/Nodes#Remapping_Arguments.Special_keys

The use of __node in ROS 2 is likely due to me randomly using it in the design document:

http://design.ros2.org/articles/topic_and_service_names.html#substitutions

Implementation considerations

We'd also want to update any documentation and the design doc:

http://design.ros2.org/articles/static_remapping.html#change-the-node-name

We could also consider supporting both, or doing a tick-tock on __node, but supporting __name at some point for consistency makes sense to me.