[CICD] Insert CI_PROJECT_ROOT_NAMESPACE in path to 'gitlab-ci' project

This is necessary as a consequence of the GitLab group renbranding from 'edgehog' to 'clea-os'.

.gitlab-ci.yml

@@ -3,7 +3,7 @@
 # Include the default CI steps from the gitlab-ci repo
 # ---------------------------------------------------------------------------------------
 include:
-  - project: 'edgehog/infrastructure/gitlab-ci'
+  - project: '${CI_PROJECT_ROOT_NAMESPACE}/infrastructure/gitlab-ci'
     ref: a8b93ddb9a6c456e15dd6eab8a46d5706c60e5dc
     file: 'layers-integration.yml'