Bug 1667126 - Jetstream2 subtests are scores not times r=perftest-reviewers,Bebe

Differential Revision: https://phabricator.services.mozilla.com/D99394

testing/raptor/raptor/tests/benchmarks/raptor-jetstream2.ini

@@ -10,9 +10,9 @@ test_url = http://<host>:<port>/JetStream2/index.html?raptor
 page_cycles = 4
 page_timeout = 2000000
 unit = score
-subtest_unit = ms
+subtest_unit = score
 lower_is_better = false
-subtest_lower_is_better = true
+subtest_lower_is_better = false
 alert_threshold = 2.0
 gecko_profile_interval = 1
 gecko_profile_entries = 14000000