Use variables to choose desired industial_ci URL and branch

ci-templates/industrial-ci-templates.yml

 variables:
   GITLAB_TEMPLATES_BRANCH: master
+  INDUSTRIAL_CI_URL: https://github.com/ros-industrial/industrial_ci.git
+  INDUSTRIAL_CI_BRANCH: master
 
 .industrial_ci:
   stage: build
@@ -8,7 +10,7 @@ variables:
       alias: docker
   before_script:
     - apk add --update bash coreutils tar
-    - git clone --quiet --depth 1 https://github.com/ros-industrial/industrial_ci.git .ci_config
+    - git clone --quiet --depth 1 ${INDUSTRIAL_CI_URL} -b ${INDUSTRIAL_CI_BRANCH} .ci_config
     - docker login ${ARTIFACT_DOCKER_URL} -u ${ARTIFACT_CI_USER} -p ${ARTIFACT_CI_TOKEN}
     - docker login tecnalia-docker-dev.artifact.tecnalia.dev -u ${ARTIFACT_CI_USER} -p ${ARTIFACT_CI_TOKEN}
   script: .ci_config/gitlab.sh