Fix missing environment variables

Since we merge them into one job, the previous way,
e.g. write to env file to pass to next job, does not work anymore

.gitlab-ci.yml

@@ -43,8 +43,10 @@ build_image:
     - git checkout -b integration
     - git merge upstream/dev
     - cd ..
-    - echo "CRI_XCBC_HEAD=$(cd CRI_XCBC; git rev-parse --short HEAD)" | tee $CI_PROJECT_DIR/build.env
-    - echo "BUILD_DATE=$(TZ=America/Chicago date +%Y%m%d)" | tee $CI_PROJECT_DIR/build.env
+    - export CRI_XCBC_HEAD=$(cd CRI_XCBC; git rev-parse --short HEAD)
+    - echo CRI_XCBC_HEAD=${CRI_XCBC_HEAD} | tee -a $CI_PROJECT_DIR/image.env
+    - export BUILD_DATE=$(TZ=America/Chicago date +%Y%m%d)
+    - echo BUILD_DATE=${BUILD_DATE} | tee -a $CI_PROJECT_DIR/image.env
     - s3cmd get --force --host=$AWS_HOST --host-bucket=$AWS_HOST s3://ood-config/group_vars/all CRI_XCBC/group_vars/prod
     - s3cmd get --force -r --host=$AWS_HOST --host-bucket=$AWS_HOST s3://cheaha-cloud-ansible-files/ ansible/files/
     - tail -n 10 CRI_XCBC/group_vars/prod
@@ -54,7 +56,7 @@ build_image:
       PKR_VAR_image_date_suffix=false
       PKR_VAR_image_name="ood-${BUILD_DATE}"
       packer build -machine-readable openstack-ood | tee ood_build.log
-    - echo BUILT_OOD_IMAGE_ID=$(grep 'Image:' ood_build.log | awk '{print $4}') | tee image.env
+    - echo BUILT_OOD_IMAGE_ID=$(grep 'Image:' ood_build.log | awk '{print $4}') | tee -a $CI_PROJECT_DIR/image.env
   artifacts:
     reports:
       dotenv: image.env