test: update integration tests to use DescribeGraph
test: update integration tests to use DescribeGraph

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