lnwallet: update tests to switch to new workflow
lnwallet: update tests to switch to new workflow

bryanvu/lnd,aakselrod/lnd,aakselrod/lnd,AndrewSamokhvalov/lnd,AndrewSamokhvalov/lnd,BitfuryLightning/lnd,LightningNetwork/lnd,ddustin/lnd,LightningNetwork/lnd,BitfuryLightning/lnd,bryanvu/lnd,ddustin/lnd