updated test result keys to imt enum

src/test/resources/e2e/nshm-alaska-2007/ANCHORAGE_AK.json

src/test/resources/e2e/nshm-alaska-2007/FAIRBANKS_AK.json

src/test/resources/e2e/nshm-alaska-2007/JUNEAU_AK.json

src/test/resources/e2e/nshm-alaska-2007/KODIAK_AK.json

src/test/resources/e2e/nshm-alaska-2007/VALDEZ_AK.json

src/test/resources/e2e/nshm-alaska-2023/ANCHORAGE_AK.json

src/test/resources/e2e/nshm-alaska-2023/FAIRBANKS_AK.json

src/test/resources/e2e/nshm-alaska-2023/JUNEAU_AK.json

src/test/resources/e2e/nshm-alaska-2023/KODIAK_AK.json

src/test/resources/e2e/nshm-alaska-2023/VALDEZ_AK.json

src/test/resources/e2e/nshm-conus-2018/BOSTON_MA.json

src/test/resources/e2e/nshm-conus-2018/CHICAGO_IL.json

src/test/resources/e2e/nshm-conus-2018/LOS_ANGELES_CA.json

src/test/resources/e2e/nshm-conus-2018/NEW_MADRID_MO.json

src/test/resources/e2e/nshm-conus-2018/NEW_YORK_NY.json

src/test/resources/e2e/nshm-conus-2018/RENO_NV.json

...test/resources/e2e/nshm-conus-2018/SALT_LAKE_CITY_UT.json

src/test/resources/e2e/nshm-conus-2018/SAN_FRANCISCO_CA.json

src/test/resources/e2e/nshm-conus-2018/SEATTLE_WA.json

src/test/resources/e2e/nshm-conus-2023/BOSTON_MA.json