Print CTA_BUILD_ID in the jobs and not the full SHA of the commit of course....

Print CTA_BUILD_ID in the jobs and not the full SHA of the commit of course. The generated rpm version was OK but the logs were useless.

.gitlab-ci.yml

@@ -7,7 +7,7 @@ stages:
 
 before_script:
   - export CTA_BUILD_ID=${CI_PIPELINE_ID}git${CI_COMMIT_SHA:0:8}
-  - echo "Exporting CTA_BUILD_ID=${CI_COMMIT_SHA}"
+  - echo "Exporting CTA_BUILD_ID=${CTA_BUILD_ID}"
 
 cta_srpm:
   stage: build:srpm