Fixed e2e test being run twice on Circle

Summary: Closes https://github.com/facebook/react-native/pull/6768

Differential Revision: D3132093

fb-gh-sync-id: 9ff9208b4549ee56c4bcf5531699857056940fc9
fbshipit-source-id: 9ff9208b4549ee56c4bcf5531699857056940fc9

circle.yml

@@ -77,7 +77,7 @@ test:
     - source scripts/circle-ci-android-setup.sh && retry3 ./scripts/run-android-instrumentation-tests.sh com.facebook.react.tests.gradle
 
     # JS and Android e2e test
-    - ./scripts/e2e-test.sh --packager --android
+    - source scripts/circle-ci-android-setup.sh && retry3 ./scripts/e2e-test.sh --packager --android
 
     # testing docs generation is not broken
     - cd website && node ./server/generate.js

scripts/e2e-test.sh

@@ -44,6 +44,7 @@ function cleanup {
   rm $MARKER_IOS
   rm $MARKER_ANDROID
   [ $SERVER_PID ] && kill -9 $SERVER_PID
+  exit $EXIT_CODE
 }
 trap cleanup EXIT