chore: && is masking prepare_environment failures (terraform-google-modules#1641)

Author: apeabody

build/int.cloudbuild.yaml

@@ -16,7 +16,7 @@ timeout: 12600s
 steps:
 - id: prepare
  name: 'gcr.io/cloud-foundation-cicd/$_DOCKER_IMAGE_DEVELOPER_TOOLS:$_DOCKER_TAG_VERSION_DEVELOPER_TOOLS'
- args: ['/bin/bash', '-c', 'source /usr/local/bin/task_helper_functions.sh && prepare_environment && chmod 600 /builder/home/.netrc && sleep 120']
+ args: ['/bin/bash', '-c', 'source /usr/local/bin/task_helper_functions.sh && prepare_environment ; chmod 600 /builder/home/.netrc && sleep 120']
  env:
  - 'TF_VAR_org_id=$_ORG_ID'
  - 'TF_VAR_folder_id=$_FOLDER_ID'