add Set2-Case2 (NGA-W2) test cases

...-Case2a-fast/active-crust/fault-sources/fault-config.json

...a-fast/active-crust/fault-sources/features/fault3.geojson

...t2-Case2a-fast/active-crust/fault-sources/mfd-config.json

.../Set2-Case2a-fast/active-crust/fault-sources/mfd-map.json

...st/active-crust/fault-sources/set2-case2/rupture-set.json

...2-Case2a-fast/active-crust/fault-sources/source-tree.json

...et2-Case2a-fast/active-crust/fault-sources/tree-info.json

...peer/models/Set2-Case2a-fast/active-crust/gmm-config.json

etc/peer/models/Set2-Case2a-fast/active-crust/gmm-tree.json

etc/peer/models/Set2-Case2a-fast/calc-config.json

etc/peer/models/Set2-Case2a-fast/model-info.json

etc/peer/models/Set2-Case2a-fast/sites.csv

.../Set2-Case2a/active-crust/fault-sources/fault-config.json

...Case2a/active-crust/fault-sources/features/fault3.geojson

...ls/Set2-Case2a/active-crust/fault-sources/mfd-config.json

...odels/Set2-Case2a/active-crust/fault-sources/mfd-map.json

...2a/active-crust/fault-sources/set2-case2/rupture-set.json

...s/Set2-Case2a/active-crust/fault-sources/source-tree.json

...els/Set2-Case2a/active-crust/fault-sources/tree-info.json

etc/peer/models/Set2-Case2a/active-crust/gmm-config.json