Better parallelization

Author: wu-hui

packages/firestore/package.json

@@ -29,7 +29,7 @@
     "test:lite:browser:debug": "karma start --browsers=Chrome --lite --auto-watch",
     "test": "run-s lint test:all",
     "test:ci": "node ../../scripts/run_tests_in_ci.js -s test:all:ci",
-    "test:all:ci": "npm-run-all --parallel test:browser test:lite:browser:nameddb --parallel test:lite:browser test:browser:prod:nameddb test:travis",
+    "test:all:ci": "npm-run-all --parallel test:browser test:browser:prod:nameddb --parallel test:lite:browser test:lite:browser:nameddb test:travis ",
     "test:all": "npm-run-all --parallel test:browser test:lite:browser test:travis --parallel test:minified test:browser:prod:nameddb",
     "test:browser": "karma start --single-run",
     "test:browser:emulator:debug": "karma start --browsers=Chrome --targetBackend=emulator",