Travis CI reliability fixes: preload package manager and increase tim…

Summary:
- Consolidate common code in iOS and tvOS test scripts
- Start the packager before starting tests, to improve reliability
- Increase timeout value in RCTTestRunner.m
Closes https://github.com/facebook/react-native/pull/10378

Differential Revision: D4028364

Pulled By: bestander

fbshipit-source-id: 24c2124a1c62643a02f0668b60a67b971e08d1a3

scripts/objc-test-tvos.sh

@@ -7,20 +7,6 @@ ROOT=$(dirname $SCRIPTS)
 
 cd $ROOT
 
-function cleanup {
-  EXIT_CODE=$?
-  set +e
-
-  if [ $EXIT_CODE -ne 0 ];
-  then
-    WATCHMAN_LOGS=/usr/local/Cellar/watchman/3.1/var/run/watchman/$USER.log
-    [ -f $WATCHMAN_LOGS ] && cat $WATCHMAN_LOGS
-  fi
-  # kill whatever is occupying port 8081 
-  lsof -i tcp:8081 | awk 'NR!=1 {print $2}' | xargs kill
-}
-trap cleanup EXIT
-
 XCODE_PROJECT="Examples/UIExplorer/UIExplorer.xcodeproj"
 XCODE_SCHEME="UIExplorer-tvOS"
 XCODE_SDK="appletvsimulator"
@@ -28,27 +14,4 @@ if [ -z "$XCODE_DESTINATION" ]; then
   XCODE_DESTINATION="platform=tvOS Simulator,name=Apple TV 1080p,OS=9.2"
 fi
 
-# Support for environments without xcpretty installed
-set +e
-OUTPUT_TOOL=$(which xcpretty)
-set -e
-
-# TODO: We use xcodebuild because xctool would stall when collecting info about
-# the tests before running them. Switch back when this issue with xctool has
-# been resolved.
-if [ -z "$OUTPUT_TOOL" ]; then
-  xcodebuild \
-    -project $XCODE_PROJECT \
-    -scheme $XCODE_SCHEME \
-    -sdk $XCODE_SDK \
-    -destination "$XCODE_DESTINATION" \
-    test
-else
-  xcodebuild \
-    -project $XCODE_PROJECT \
-    -scheme $XCODE_SCHEME \
-    -sdk $XCODE_SDK \
-    -destination "$XCODE_DESTINATION" \
-    test | $OUTPUT_TOOL && exit ${PIPESTATUS[0]}
-fi
-
+. ./scripts/objc-test.sh