Allow source runs to run first node of DAG without +

[eogilvy12]

Feature

Allow source runs to run first node of DAG without +.

Feature description

dbt run --models source:name_of_source will not run the models that directly reference the source. You need to add a + to the run which will run everything, including downstream models. I noticed this when switching over a project to use sources and I just wanted to make sure the staging models could run.

Who will this benefit?

This is not high priority in any way but seems to be how it would work.

[drewbanin]

Thanks for the request @eogilvy12 :)

[krishbox]

@eogilvy12, @drewbanin, I'll take a shot at this one. Hope I can find the relevant parts to change in the source!

[drewbanin]

Thanks @krishbox! How are you planning on implementing this one?

[drewbanin]

closing this issue as stale, but picking up the discussion in #2052

Edit: changed url