message: build(aio): turn on debugging of the payload.sh script to debug ci failures
diff: #!/bin/bash
  -# WARNING: FIREBASE_TOKEN should NOT be printed.
  -set +x -eu -o pipefail
  +set -eu -o pipefail
  readonly thisDir=$(cd $(dirname $0); pwd)
  readonly parentDir=$(dirname $thisDir)
  readonly TOKEN=${ANGULAR_PAYLOAD_FIREBASE_TOKEN:-}
  readonly PROJECT_NAME="angular-payload-size"
  +# temporarily turn on debugging - we disable it later in the script to prevent token leak
  +set -x
  +
  source ${thisDir}/_payload-limits.sh
  failed=false
  @@ -66,6 +68,9 @@ echo $payloadData
  if [[ "$TRAVIS_PULL_REQUEST" == "false" ]]; then
  readonly safeBranchName=$(echo $TRAVIS_BRANCH | sed -e 's/\./_/g')
  readonly dbPath=/payload/aio/$safeBranchName/$TRAVIS_COMMIT
  +
  + # WARNING: FIREBASE_TOKEN should NOT be printed.
  + set +x
  firebase database:update --data "$payloadData" --project $PROJECT_NAME --confirm --token "$TOKEN" $dbPath
  fi
  