CI for multinode test

[aeyakovenko]

We are a bit in the blind with the status of multinode performance. We need a test that runs on google cloud or aws with a big pile of nodes. we should have a quota of 20 on google cloud, and it seems easy to increase there. We can base something on these terrible scripts #329

[aeyakovenko]

@sakridge @garious I think on every master update? @sakridge has a script to generate a performance graph. It would be awesome to post it on every pr or master update

[mvines]

@sakridge, can you share that script somewhere please

[sakridge]

@mvines it's checked in scripts/perf-plot.py

[mvines]

Bumping to 0.8.0 as this does not block 0.7.0

[aeyakovenko]

Fixed with dynamic test