add Set2-Case3 peer test

etc/peer/models/Set2-Case3d-fast/active-crust/gmm-tree.json

etc/peer/models/Set2-Case3d-fast/calc-config.json

etc/peer/models/Set2-Case3d-fast/model-info.json

etc/peer/models/Set2-Case3d-fast/sites.csv

.../Set2-Case3d/active-crust/fault-sources/fault-config.json

...-Case3d/active-crust/fault-sources/features/fault.geojson

...ls/Set2-Case3d/active-crust/fault-sources/mfd-config.json

...odels/Set2-Case3d/active-crust/fault-sources/mfd-map.json

...s/Set2-Case3d/active-crust/fault-sources/source-tree.json

...ase3d/active-crust/fault-sources/source1/rupture-set.json

...els/Set2-Case3d/active-crust/fault-sources/tree-info.json

etc/peer/models/Set2-Case3d/active-crust/gmm-config.json

etc/peer/models/Set2-Case3d/active-crust/gmm-tree.json

etc/peer/models/Set2-Case3d/calc-config.json

etc/peer/models/Set2-Case3d/model-info.json

etc/peer/models/Set2-Case3d/sites.csv

.../java/gov/usgs/earthquake/nshmp/model/peer/PeerTests.java