Missing default values in standard.osc for map.create_route()

I noticed missing default values in standard.osc.

map.create_route should have its second and third parameters having default values.

I wanted to do a PR, but for the second parameter it's not clear which one is the default.

Here's the text from the doc: "If the user does not specify this argument, the method uses the default value." (is it the enum default value, road?)