pipeline: show: --outs: DAG has improper edges

[liamtoran]

• DVC version : 0.92, MacOS, installed via pip.
• Related issue : pipeline: show: outs: improper DAG #1744 : Seems like the exact same problem but status says closed / merged.

Issue :
In the DAG for --outs , all outputs from a connected stage are linked to the output of the stage.

Steps to recreations :

dvc run -o alice -o bob -f step1.dvc ' touch alice | touch bob ' 
dvc run -d alice -o carol -f step2.dvc ' touch carol '
dvc pipeline show --ascii --outs step2.dvc

There shouldn't be an edge going from bob to carol.

Probably related to this line ?
https://github.com/iterative/dvc/blob/a338fad036bd9ac8bdd79ecec964f8c5558609c4/dvc/command/pipeline.py#L63