Multiple DX modules don't deploy.

[Rowan Massey]

I currently have multiple DX modules in my project, all pointing to the same Scratch Org. When I right click on a module other than the first one, and select Push Metadata, it only ever pushes the first module to the scratch org. I have to specifically execute sfdx force:source:push in the relevant module's directory to get the code up.

[Scott Wells]

Duplicate of #741.

[Scott Wells]

Rowan, we're pretty much working this same issue actively in #741, so I'm going to resolve this one and we'll see if we can use that one to get things working to your satisfaction.