build: add circleci target to restrict max jest workers

Signed-off-by: Chris Goller <goller@gmail.com>

.circleci/config.yml

@@ -150,7 +150,7 @@ jobs:
            set +e
            cd ui
            TESTFILES=$(circleci tests glob "src/**/*.test.ts*" | circleci tests split --split-by=timings)
-           yarn test:ci $TESTFILES
+           yarn test:circleci $TESTFILES
       - run: make chronograf_lint
       - store_test_results:
           path: coverage

ui/package.json

@@ -33,6 +33,7 @@
     "test:ju:report": "junit-viewer --results=junit-results --save-file=cypress/site/junit-report.html",
     "test:ju:clean": "rm junit-results/*.xml",
     "test:ju:all": "yarn test:ju:clean && yarn test:junit; yarn test:ju:report;",
+    "test:circleci": "yarn run test:ci --maxWorkers=2",
     "test:ci": "JEST_JUNIT_OUTPUT_DIR=\"./coverage\" jest --ci --coverage",
     "lint": "yarn tsc && yarn prettier && yarn eslint",
     "eslint": "eslint '{src,cypress}/**/*.{ts,tsx}'",