updated model tests to include site/basin

...est/java/gov/usgs/earthquake/nshmp/model/LoaderTests.java

...urces/model/test-model/results/SA1P0/curves-truncated.csv

src/test/resources/model/test-model/results/SA1P0/curves.csv

...urces/model/test-model/results/SA5P0/curves-truncated.csv

src/test/resources/model/test-model/results/SA5P0/curves.csv

...ources/model/test-model/site-data/basin/puget-lowland.csv

...es/model/test-model/site-data/basin/puget-lowland.geojson

...esources/model/test-model/~site-data/basin/basins.geojson

...urces/model/test-model/~site-data/basin/puget-lowland.csv